Landau distribution¶
Landau distribution function
This module computes the Landau distribution, which governs the fluctuations in energy loss of particles travelling through a relatively thin layer of matter.
Currently, this module only contains functions to calculate the exact function using two integral representations of the defining complex integral. This should be extended by approximations when the need for doing serious work arises.
References are made to Fokkema2012, DOI: 10.3990/1.9789036534383.
- sapphire.analysis.landau.pdf_kernel(y, sf)¶
- sapphire.analysis.landau.pdf_kernel2(u, lf)¶
The Landau kernel
Fokkema2012, eq 2.13.
- class sapphire.analysis.landau.Scintillator¶
- thickness = 0.02¶
- xi = 0.172018¶
- epsilon = 3.10756e-11¶
- delta = 2.97663¶
- Euler = 0.577215665¶
- mev_scale = 1¶
- gauss_scale = 1¶
- full_domain = array([-100. , -99.7997998 , -99.5995996 , -99.3993994 , -99.1991992 , -98.998999 , -98.7987988 , -98.5985986 , -98.3983984 , -98.1981982 , -97.997998 , -97.7977978 , -97.5975976 , -97.3973974 , -97.1971972 , -96.996997 , -96.7967968 , -96.5965966 , -96.3963964 , -96.1961962 , -95.995996 , -95.7957958 , -95.5955956 , -95.3953954 , -95.1951952 , -94.99499499, -94.79479479, -94.59459459, -94.39439439, -94.19419419, -93.99399399, -93.79379379, -93.59359359, -93.39339339, -93.19319319, -92.99299299, -92.79279279, -92.59259259, -92.39239239, -92.19219219, -91.99199199, -91.79179179, -91.59159159, -91.39139139, -91.19119119, -90.99099099, -90.79079079, -90.59059059, -90.39039039, -90.19019019, -89.98998999, -89.78978979, -89.58958959, -89.38938939, -89.18918919, -88.98898899, -88.78878879, -88.58858859, -88.38838839, -88.18818819, -87.98798799, -87.78778779, -87.58758759, -87.38738739, -87.18718719, -86.98698699, -86.78678679, -86.58658659, -86.38638639, -86.18618619, -85.98598599, -85.78578579, -85.58558559, -85.38538539, -85.18518519, -84.98498498, -84.78478478, -84.58458458, -84.38438438, -84.18418418, -83.98398398, -83.78378378, -83.58358358, -83.38338338, -83.18318318, -82.98298298, -82.78278278, -82.58258258, -82.38238238, -82.18218218, -81.98198198, -81.78178178, -81.58158158, -81.38138138, -81.18118118, -80.98098098, -80.78078078, -80.58058058, -80.38038038, -80.18018018, -79.97997998, -79.77977978, -79.57957958, -79.37937938, -79.17917918, -78.97897898, -78.77877878, -78.57857858, -78.37837838, -78.17817818, -77.97797798, -77.77777778, -77.57757758, -77.37737738, -77.17717718, -76.97697698, -76.77677678, -76.57657658, -76.37637638, -76.17617618, -75.97597598, -75.77577578, -75.57557558, -75.37537538, -75.17517518, -74.97497497, -74.77477477, -74.57457457, -74.37437437, -74.17417417, -73.97397397, -73.77377377, -73.57357357, -73.37337337, -73.17317317, -72.97297297, -72.77277277, -72.57257257, -72.37237237, -72.17217217, -71.97197197, -71.77177177, -71.57157157, -71.37137137, -71.17117117, -70.97097097, -70.77077077, -70.57057057, -70.37037037, -70.17017017, -69.96996997, -69.76976977, -69.56956957, -69.36936937, -69.16916917, -68.96896897, -68.76876877, -68.56856857, -68.36836837, -68.16816817, -67.96796797, -67.76776777, -67.56756757, -67.36736737, -67.16716717, -66.96696697, -66.76676677, -66.56656657, -66.36636637, -66.16616617, -65.96596597, -65.76576577, -65.56556557, -65.36536537, -65.16516517, -64.96496496, -64.76476476, -64.56456456, -64.36436436, -64.16416416, -63.96396396, -63.76376376, -63.56356356, -63.36336336, -63.16316316, -62.96296296, -62.76276276, -62.56256256, -62.36236236, -62.16216216, -61.96196196, -61.76176176, -61.56156156, -61.36136136, -61.16116116, -60.96096096, -60.76076076, -60.56056056, -60.36036036, -60.16016016, -59.95995996, -59.75975976, -59.55955956, -59.35935936, -59.15915916, -58.95895896, -58.75875876, -58.55855856, -58.35835836, -58.15815816, -57.95795796, -57.75775776, -57.55755756, -57.35735736, -57.15715716, -56.95695696, -56.75675676, -56.55655656, -56.35635636, -56.15615616, -55.95595596, -55.75575576, -55.55555556, -55.35535536, -55.15515516, -54.95495495, -54.75475475, -54.55455455, -54.35435435, -54.15415415, -53.95395395, -53.75375375, -53.55355355, -53.35335335, -53.15315315, -52.95295295, -52.75275275, -52.55255255, -52.35235235, -52.15215215, -51.95195195, -51.75175175, -51.55155155, -51.35135135, -51.15115115, -50.95095095, -50.75075075, -50.55055055, -50.35035035, -50.15015015, -49.94994995, -49.74974975, -49.54954955, -49.34934935, -49.14914915, -48.94894895, -48.74874875, -48.54854855, -48.34834835, -48.14814815, -47.94794795, -47.74774775, -47.54754755, -47.34734735, -47.14714715, -46.94694695, -46.74674675, -46.54654655, -46.34634635, -46.14614615, -45.94594595, -45.74574575, -45.54554555, -45.34534535, -45.14514515, -44.94494494, -44.74474474, -44.54454454, -44.34434434, -44.14414414, -43.94394394, -43.74374374, -43.54354354, -43.34334334, -43.14314314, -42.94294294, -42.74274274, -42.54254254, -42.34234234, -42.14214214, -41.94194194, -41.74174174, -41.54154154, -41.34134134, -41.14114114, -40.94094094, -40.74074074, -40.54054054, -40.34034034, -40.14014014, -39.93993994, -39.73973974, -39.53953954, -39.33933934, -39.13913914, -38.93893894, -38.73873874, -38.53853854, -38.33833834, -38.13813814, -37.93793794, -37.73773774, -37.53753754, -37.33733734, -37.13713714, -36.93693694, -36.73673674, -36.53653654, -36.33633634, -36.13613614, -35.93593594, -35.73573574, -35.53553554, -35.33533534, -35.13513514, -34.93493493, -34.73473473, -34.53453453, -34.33433433, -34.13413413, -33.93393393, -33.73373373, -33.53353353, -33.33333333, -33.13313313, -32.93293293, -32.73273273, -32.53253253, -32.33233233, -32.13213213, -31.93193193, -31.73173173, -31.53153153, -31.33133133, -31.13113113, -30.93093093, -30.73073073, -30.53053053, -30.33033033, -30.13013013, -29.92992993, -29.72972973, -29.52952953, -29.32932933, -29.12912913, -28.92892893, -28.72872873, -28.52852853, -28.32832833, -28.12812813, -27.92792793, -27.72772773, -27.52752753, -27.32732733, -27.12712713, -26.92692693, -26.72672673, -26.52652653, -26.32632633, -26.12612613, -25.92592593, -25.72572573, -25.52552553, -25.32532533, -25.12512513, -24.92492492, -24.72472472, -24.52452452, -24.32432432, -24.12412412, -23.92392392, -23.72372372, -23.52352352, -23.32332332, -23.12312312, -22.92292292, -22.72272272, -22.52252252, -22.32232232, -22.12212212, -21.92192192, -21.72172172, -21.52152152, -21.32132132, -21.12112112, -20.92092092, -20.72072072, -20.52052052, -20.32032032, -20.12012012, -19.91991992, -19.71971972, -19.51951952, -19.31931932, -19.11911912, -18.91891892, -18.71871872, -18.51851852, -18.31831832, -18.11811812, -17.91791792, -17.71771772, -17.51751752, -17.31731732, -17.11711712, -16.91691692, -16.71671672, -16.51651652, -16.31631632, -16.11611612, -15.91591592, -15.71571572, -15.51551552, -15.31531532, -15.11511512, -14.91491491, -14.71471471, -14.51451451, -14.31431431, -14.11411411, -13.91391391, -13.71371371, -13.51351351, -13.31331331, -13.11311311, -12.91291291, -12.71271271, -12.51251251, -12.31231231, -12.11211211, -11.91191191, -11.71171171, -11.51151151, -11.31131131, -11.11111111, -10.91091091, -10.71071071, -10.51051051, -10.31031031, -10.11011011, -9.90990991, -9.70970971, -9.50950951, -9.30930931, -9.10910911, -8.90890891, -8.70870871, -8.50850851, -8.30830831, -8.10810811, -7.90790791, -7.70770771, -7.50750751, -7.30730731, -7.10710711, -6.90690691, -6.70670671, -6.50650651, -6.30630631, -6.10610611, -5.90590591, -5.70570571, -5.50550551, -5.30530531, -5.10510511, -4.9049049 , -4.7047047 , -4.5045045 , -4.3043043 , -4.1041041 , -3.9039039 , -3.7037037 , -3.5035035 , -3.3033033 , -3.1031031 , -2.9029029 , -2.7027027 , -2.5025025 , -2.3023023 , -2.1021021 , -1.9019019 , -1.7017017 , -1.5015015 , -1.3013013 , -1.1011011 , -0.9009009 , -0.7007007 , -0.5005005 , -0.3003003 , -0.1001001 , 0.1001001 , 0.3003003 , 0.5005005 , 0.7007007 , 0.9009009 , 1.1011011 , 1.3013013 , 1.5015015 , 1.7017017 , 1.9019019 , 2.1021021 , 2.3023023 , 2.5025025 , 2.7027027 , 2.9029029 , 3.1031031 , 3.3033033 , 3.5035035 , 3.7037037 , 3.9039039 , 4.1041041 , 4.3043043 , 4.5045045 , 4.7047047 , 4.9049049 , 5.10510511, 5.30530531, 5.50550551, 5.70570571, 5.90590591, 6.10610611, 6.30630631, 6.50650651, 6.70670671, 6.90690691, 7.10710711, 7.30730731, 7.50750751, 7.70770771, 7.90790791, 8.10810811, 8.30830831, 8.50850851, 8.70870871, 8.90890891, 9.10910911, 9.30930931, 9.50950951, 9.70970971, 9.90990991, 10.11011011, 10.31031031, 10.51051051, 10.71071071, 10.91091091, 11.11111111, 11.31131131, 11.51151151, 11.71171171, 11.91191191, 12.11211211, 12.31231231, 12.51251251, 12.71271271, 12.91291291, 13.11311311, 13.31331331, 13.51351351, 13.71371371, 13.91391391, 14.11411411, 14.31431431, 14.51451451, 14.71471471, 14.91491491, 15.11511512, 15.31531532, 15.51551552, 15.71571572, 15.91591592, 16.11611612, 16.31631632, 16.51651652, 16.71671672, 16.91691692, 17.11711712, 17.31731732, 17.51751752, 17.71771772, 17.91791792, 18.11811812, 18.31831832, 18.51851852, 18.71871872, 18.91891892, 19.11911912, 19.31931932, 19.51951952, 19.71971972, 19.91991992, 20.12012012, 20.32032032, 20.52052052, 20.72072072, 20.92092092, 21.12112112, 21.32132132, 21.52152152, 21.72172172, 21.92192192, 22.12212212, 22.32232232, 22.52252252, 22.72272272, 22.92292292, 23.12312312, 23.32332332, 23.52352352, 23.72372372, 23.92392392, 24.12412412, 24.32432432, 24.52452452, 24.72472472, 24.92492492, 25.12512513, 25.32532533, 25.52552553, 25.72572573, 25.92592593, 26.12612613, 26.32632633, 26.52652653, 26.72672673, 26.92692693, 27.12712713, 27.32732733, 27.52752753, 27.72772773, 27.92792793, 28.12812813, 28.32832833, 28.52852853, 28.72872873, 28.92892893, 29.12912913, 29.32932933, 29.52952953, 29.72972973, 29.92992993, 30.13013013, 30.33033033, 30.53053053, 30.73073073, 30.93093093, 31.13113113, 31.33133133, 31.53153153, 31.73173173, 31.93193193, 32.13213213, 32.33233233, 32.53253253, 32.73273273, 32.93293293, 33.13313313, 33.33333333, 33.53353353, 33.73373373, 33.93393393, 34.13413413, 34.33433433, 34.53453453, 34.73473473, 34.93493493, 35.13513514, 35.33533534, 35.53553554, 35.73573574, 35.93593594, 36.13613614, 36.33633634, 36.53653654, 36.73673674, 36.93693694, 37.13713714, 37.33733734, 37.53753754, 37.73773774, 37.93793794, 38.13813814, 38.33833834, 38.53853854, 38.73873874, 38.93893894, 39.13913914, 39.33933934, 39.53953954, 39.73973974, 39.93993994, 40.14014014, 40.34034034, 40.54054054, 40.74074074, 40.94094094, 41.14114114, 41.34134134, 41.54154154, 41.74174174, 41.94194194, 42.14214214, 42.34234234, 42.54254254, 42.74274274, 42.94294294, 43.14314314, 43.34334334, 43.54354354, 43.74374374, 43.94394394, 44.14414414, 44.34434434, 44.54454454, 44.74474474, 44.94494494, 45.14514515, 45.34534535, 45.54554555, 45.74574575, 45.94594595, 46.14614615, 46.34634635, 46.54654655, 46.74674675, 46.94694695, 47.14714715, 47.34734735, 47.54754755, 47.74774775, 47.94794795, 48.14814815, 48.34834835, 48.54854855, 48.74874875, 48.94894895, 49.14914915, 49.34934935, 49.54954955, 49.74974975, 49.94994995, 50.15015015, 50.35035035, 50.55055055, 50.75075075, 50.95095095, 51.15115115, 51.35135135, 51.55155155, 51.75175175, 51.95195195, 52.15215215, 52.35235235, 52.55255255, 52.75275275, 52.95295295, 53.15315315, 53.35335335, 53.55355355, 53.75375375, 53.95395395, 54.15415415, 54.35435435, 54.55455455, 54.75475475, 54.95495495, 55.15515516, 55.35535536, 55.55555556, 55.75575576, 55.95595596, 56.15615616, 56.35635636, 56.55655656, 56.75675676, 56.95695696, 57.15715716, 57.35735736, 57.55755756, 57.75775776, 57.95795796, 58.15815816, 58.35835836, 58.55855856, 58.75875876, 58.95895896, 59.15915916, 59.35935936, 59.55955956, 59.75975976, 59.95995996, 60.16016016, 60.36036036, 60.56056056, 60.76076076, 60.96096096, 61.16116116, 61.36136136, 61.56156156, 61.76176176, 61.96196196, 62.16216216, 62.36236236, 62.56256256, 62.76276276, 62.96296296, 63.16316316, 63.36336336, 63.56356356, 63.76376376, 63.96396396, 64.16416416, 64.36436436, 64.56456456, 64.76476476, 64.96496496, 65.16516517, 65.36536537, 65.56556557, 65.76576577, 65.96596597, 66.16616617, 66.36636637, 66.56656657, 66.76676677, 66.96696697, 67.16716717, 67.36736737, 67.56756757, 67.76776777, 67.96796797, 68.16816817, 68.36836837, 68.56856857, 68.76876877, 68.96896897, 69.16916917, 69.36936937, 69.56956957, 69.76976977, 69.96996997, 70.17017017, 70.37037037, 70.57057057, 70.77077077, 70.97097097, 71.17117117, 71.37137137, 71.57157157, 71.77177177, 71.97197197, 72.17217217, 72.37237237, 72.57257257, 72.77277277, 72.97297297, 73.17317317, 73.37337337, 73.57357357, 73.77377377, 73.97397397, 74.17417417, 74.37437437, 74.57457457, 74.77477477, 74.97497497, 75.17517518, 75.37537538, 75.57557558, 75.77577578, 75.97597598, 76.17617618, 76.37637638, 76.57657658, 76.77677678, 76.97697698, 77.17717718, 77.37737738, 77.57757758, 77.77777778, 77.97797798, 78.17817818, 78.37837838, 78.57857858, 78.77877878, 78.97897898, 79.17917918, 79.37937938, 79.57957958, 79.77977978, 79.97997998, 80.18018018, 80.38038038, 80.58058058, 80.78078078, 80.98098098, 81.18118118, 81.38138138, 81.58158158, 81.78178178, 81.98198198, 82.18218218, 82.38238238, 82.58258258, 82.78278278, 82.98298298, 83.18318318, 83.38338338, 83.58358358, 83.78378378, 83.98398398, 84.18418418, 84.38438438, 84.58458458, 84.78478478, 84.98498498, 85.18518519, 85.38538539, 85.58558559, 85.78578579, 85.98598599, 86.18618619, 86.38638639, 86.58658659, 86.78678679, 86.98698699, 87.18718719, 87.38738739, 87.58758759, 87.78778779, 87.98798799, 88.18818819, 88.38838839, 88.58858859, 88.78878879, 88.98898899, 89.18918919, 89.38938939, 89.58958959, 89.78978979, 89.98998999, 90.19019019, 90.39039039, 90.59059059, 90.79079079, 90.99099099, 91.19119119, 91.39139139, 91.59159159, 91.79179179, 91.99199199, 92.19219219, 92.39239239, 92.59259259, 92.79279279, 92.99299299, 93.19319319, 93.39339339, 93.59359359, 93.79379379, 93.99399399, 94.19419419, 94.39439439, 94.59459459, 94.79479479, 94.99499499, 95.1951952 , 95.3953954 , 95.5955956 , 95.7957958 , 95.995996 , 96.1961962 , 96.3963964 , 96.5965966 , 96.7967968 , 96.996997 , 97.1971972 , 97.3973974 , 97.5975976 , 97.7977978 , 97.997998 , 98.1981982 , 98.3983984 , 98.5985986 , 98.7987988 , 98.998999 , 99.1991992 , 99.3993994 , 99.5995996 , 99.7997998 , 100. ])¶
- pdf_values = None¶
- pdf_domain = array([ -4.9049049 , -4.7047047 , -4.5045045 , -4.3043043 , -4.1041041 , -3.9039039 , -3.7037037 , -3.5035035 , -3.3033033 , -3.1031031 , -2.9029029 , -2.7027027 , -2.5025025 , -2.3023023 , -2.1021021 , -1.9019019 , -1.7017017 , -1.5015015 , -1.3013013 , -1.1011011 , -0.9009009 , -0.7007007 , -0.5005005 , -0.3003003 , -0.1001001 , 0.1001001 , 0.3003003 , 0.5005005 , 0.7007007 , 0.9009009 , 1.1011011 , 1.3013013 , 1.5015015 , 1.7017017 , 1.9019019 , 2.1021021 , 2.3023023 , 2.5025025 , 2.7027027 , 2.9029029 , 3.1031031 , 3.3033033 , 3.5035035 , 3.7037037 , 3.9039039 , 4.1041041 , 4.3043043 , 4.5045045 , 4.7047047 , 4.9049049 , 5.10510511, 5.30530531, 5.50550551, 5.70570571, 5.90590591, 6.10610611, 6.30630631, 6.50650651, 6.70670671, 6.90690691, 7.10710711, 7.30730731, 7.50750751, 7.70770771, 7.90790791, 8.10810811, 8.30830831, 8.50850851, 8.70870871, 8.90890891, 9.10910911, 9.30930931, 9.50950951, 9.70970971, 9.90990991, 10.11011011, 10.31031031, 10.51051051, 10.71071071, 10.91091091, 11.11111111, 11.31131131, 11.51151151, 11.71171171, 11.91191191, 12.11211211, 12.31231231, 12.51251251, 12.71271271, 12.91291291, 13.11311311, 13.31331331, 13.51351351, 13.71371371, 13.91391391, 14.11411411, 14.31431431, 14.51451451, 14.71471471, 14.91491491, 15.11511512, 15.31531532, 15.51551552, 15.71571572, 15.91591592, 16.11611612, 16.31631632, 16.51651652, 16.71671672, 16.91691692, 17.11711712, 17.31731732, 17.51751752, 17.71771772, 17.91791792, 18.11811812, 18.31831832, 18.51851852, 18.71871872, 18.91891892, 19.11911912, 19.31931932, 19.51951952, 19.71971972, 19.91991992, 20.12012012, 20.32032032, 20.52052052, 20.72072072, 20.92092092, 21.12112112, 21.32132132, 21.52152152, 21.72172172, 21.92192192, 22.12212212, 22.32232232, 22.52252252, 22.72272272, 22.92292292, 23.12312312, 23.32332332, 23.52352352, 23.72372372, 23.92392392, 24.12412412, 24.32432432, 24.52452452, 24.72472472, 24.92492492, 25.12512513, 25.32532533, 25.52552553, 25.72572573, 25.92592593, 26.12612613, 26.32632633, 26.52652653, 26.72672673, 26.92692693, 27.12712713, 27.32732733, 27.52752753, 27.72772773, 27.92792793, 28.12812813, 28.32832833, 28.52852853, 28.72872873, 28.92892893, 29.12912913, 29.32932933, 29.52952953, 29.72972973, 29.92992993, 30.13013013, 30.33033033, 30.53053053, 30.73073073, 30.93093093, 31.13113113, 31.33133133, 31.53153153, 31.73173173, 31.93193193, 32.13213213, 32.33233233, 32.53253253, 32.73273273, 32.93293293, 33.13313313, 33.33333333, 33.53353353, 33.73373373, 33.93393393, 34.13413413, 34.33433433, 34.53453453, 34.73473473, 34.93493493, 35.13513514, 35.33533534, 35.53553554, 35.73573574, 35.93593594, 36.13613614, 36.33633634, 36.53653654, 36.73673674, 36.93693694, 37.13713714, 37.33733734, 37.53753754, 37.73773774, 37.93793794, 38.13813814, 38.33833834, 38.53853854, 38.73873874, 38.93893894, 39.13913914, 39.33933934, 39.53953954, 39.73973974, 39.93993994, 40.14014014, 40.34034034, 40.54054054, 40.74074074, 40.94094094, 41.14114114, 41.34134134, 41.54154154, 41.74174174, 41.94194194, 42.14214214, 42.34234234, 42.54254254, 42.74274274, 42.94294294, 43.14314314, 43.34334334, 43.54354354, 43.74374374, 43.94394394, 44.14414414, 44.34434434, 44.54454454, 44.74474474, 44.94494494, 45.14514515, 45.34534535, 45.54554555, 45.74574575, 45.94594595, 46.14614615, 46.34634635, 46.54654655, 46.74674675, 46.94694695, 47.14714715, 47.34734735, 47.54754755, 47.74774775, 47.94794795, 48.14814815, 48.34834835, 48.54854855, 48.74874875, 48.94894895, 49.14914915, 49.34934935, 49.54954955, 49.74974975, 49.94994995, 50.15015015, 50.35035035, 50.55055055, 50.75075075, 50.95095095, 51.15115115, 51.35135135, 51.55155155, 51.75175175, 51.95195195, 52.15215215, 52.35235235, 52.55255255, 52.75275275, 52.95295295, 53.15315315, 53.35335335, 53.55355355, 53.75375375, 53.95395395, 54.15415415, 54.35435435, 54.55455455, 54.75475475, 54.95495495, 55.15515516, 55.35535536, 55.55555556, 55.75575576, 55.95595596, 56.15615616, 56.35635636, 56.55655656, 56.75675676, 56.95695696, 57.15715716, 57.35735736, 57.55755756, 57.75775776, 57.95795796, 58.15815816, 58.35835836, 58.55855856, 58.75875876, 58.95895896, 59.15915916, 59.35935936, 59.55955956, 59.75975976, 59.95995996, 60.16016016, 60.36036036, 60.56056056, 60.76076076, 60.96096096, 61.16116116, 61.36136136, 61.56156156, 61.76176176, 61.96196196, 62.16216216, 62.36236236, 62.56256256, 62.76276276, 62.96296296, 63.16316316, 63.36336336, 63.56356356, 63.76376376, 63.96396396, 64.16416416, 64.36436436, 64.56456456, 64.76476476, 64.96496496, 65.16516517, 65.36536537, 65.56556557, 65.76576577, 65.96596597, 66.16616617, 66.36636637, 66.56656657, 66.76676677, 66.96696697, 67.16716717, 67.36736737, 67.56756757, 67.76776777, 67.96796797, 68.16816817, 68.36836837, 68.56856857, 68.76876877, 68.96896897, 69.16916917, 69.36936937, 69.56956957, 69.76976977, 69.96996997, 70.17017017, 70.37037037, 70.57057057, 70.77077077, 70.97097097, 71.17117117, 71.37137137, 71.57157157, 71.77177177, 71.97197197, 72.17217217, 72.37237237, 72.57257257, 72.77277277, 72.97297297, 73.17317317, 73.37337337, 73.57357357, 73.77377377, 73.97397397, 74.17417417, 74.37437437, 74.57457457, 74.77477477, 74.97497497, 75.17517518, 75.37537538, 75.57557558, 75.77577578, 75.97597598, 76.17617618, 76.37637638, 76.57657658, 76.77677678, 76.97697698, 77.17717718, 77.37737738, 77.57757758, 77.77777778, 77.97797798, 78.17817818, 78.37837838, 78.57857858, 78.77877878, 78.97897898, 79.17917918, 79.37937938, 79.57957958, 79.77977978, 79.97997998, 80.18018018, 80.38038038, 80.58058058, 80.78078078, 80.98098098, 81.18118118, 81.38138138, 81.58158158, 81.78178178, 81.98198198, 82.18218218, 82.38238238, 82.58258258, 82.78278278, 82.98298298, 83.18318318, 83.38338338, 83.58358358, 83.78378378, 83.98398398, 84.18418418, 84.38438438, 84.58458458, 84.78478478, 84.98498498, 85.18518519, 85.38538539, 85.58558559, 85.78578579, 85.98598599, 86.18618619, 86.38638639, 86.58658659, 86.78678679, 86.98698699, 87.18718719, 87.38738739, 87.58758759, 87.78778779, 87.98798799, 88.18818819, 88.38838839, 88.58858859, 88.78878879, 88.98898899, 89.18918919, 89.38938939, 89.58958959, 89.78978979, 89.98998999, 90.19019019, 90.39039039, 90.59059059, 90.79079079, 90.99099099, 91.19119119, 91.39139139, 91.59159159, 91.79179179, 91.99199199, 92.19219219, 92.39239239, 92.59259259, 92.79279279, 92.99299299, 93.19319319, 93.39339339, 93.59359359, 93.79379379, 93.99399399, 94.19419419, 94.39439439, 94.59459459, 94.79479479, 94.99499499, 95.1951952 , 95.3953954 , 95.5955956 , 95.7957958 , 95.995996 , 96.1961962 , 96.3963964 , 96.5965966 , 96.7967968 , 96.996997 , 97.1971972 , 97.3973974 , 97.5975976 , 97.7977978 , 97.997998 , 98.1981982 , 98.3983984 , 98.5985986 , 98.7987988 , 98.998999 , 99.1991992 , 99.3993994 , 99.5995996 , 99.7997998 , 100. ])¶
- landau_pdf(energy_loss)¶
The Landau energy loss distribution function
Fokkema2012, eq 2.9, where lf is eq 2.10.
- Parameters:
energy_loss – Energy loss in the scintillator.
- Returns:
energy loss probability.
- lf(energy_loss)¶
Calculate the lambda parameter
Fokkema2012, eq 2.10. With additional shift by delta.
- Parameters:
energy_loss – Energy loss in the scintillator.
- Returns:
lambda parameter.
- pdf(lf)¶
The Landau probability density function
Fokkema2012, eq 2.13.
- Parameters:
lf – lambda parameter.
- Returns:
probability.
- conv_landau_for_x(x, count_scale=1, mev_scale=None, gauss_scale=None)¶
Landau convolved with Gaussian
Fokkema2012, eq 5.4.
- Parameters:
x – energy loss(es) for which to get the probability.
count_scale – total number of counts.
mev_scale – number of MeV per unit of x.
gauss_scale – width of the normal distribution.
- Returns:
probability.
- conv_landau(x, count_scale=1, mev_scale=None, gauss_scale=None)¶
Bare-bones convoluted landau function
This thing is fragile. Use with great care! First and foremost, x must be symmetrical around zero. Second, x must contain most of the Landau function (including a significant part of the tail). If not, the results cannot be trusted!
Better use conv_landau_for_x, which better handles this.
- residuals(p, xdata, ydata, a, b)¶
- constrained_residuals(p, xdata, ydata, a, b)¶
- sapphire.analysis.landau.discrete_convolution(f, g, t)¶
Discrete convolution
- Parameters:
f,g – two functions that take one argument (t).
t – values for which the functions will be evaluated, and the along which the convolution will be performed.
- Returns:
convolution of the two functions.