VERY PRELIMINARY ALBEDO SIMULATIONS

Dorothea PfeifferGIF++ Project Meeting17.10.2012

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Albedo

107 gammas (662 keV) fired through 1m vaccum at flat surface of infinite block

Percentages of backscattered gammas:

17.10.2012Dorothea Pfeiffer

90 ° 45 °Concrete 24.98 % 32.53 %Steel 15.10% 21.25%Lead 1.19% 2.47%

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Energy distribution

17.10.2012Dorothea Pfeiffer

Peek around 200 keV

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Angular distribution

17.10.2012Dorothea Pfeiffer

theta: angle between surface normal and momentum vector of scattered gamma

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662 keV gammas 90° onto concrete

17.10.2012Dorothea Pfeiffer

2.49836e+006 of 10000000 (24.9836%) backscatteredtheta: angle between surface normal and momentum vector of scattered gamma

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662 keV gammas 45° onto concrete

17.10.2012Dorothea Pfeiffer

3.25311e+006 of 10000000 (32.5311%) backscatteredtheta: angle between surface normal and momentum vector of scattered gamma

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662 keV gammas 90° onto steel

17.10.2012Dorothea Pfeiffer

1.50984e+006 of 10000000 (15.0984%)backscatteredtheta: angle between surface normal and momentum vector of scattered gamma

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662 keV gammas 45° onto steel

17.10.2012Dorothea Pfeiffer

2.12545e+006 of 10000000 (21.2545%) backscatteredtheta: angle between surface normal and momentum vector of scattered gamma

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662 keV gammas 90° onto lead

17.10.2012Dorothea Pfeiffer

119237 of 10000000 (1.19237%) backscatteredtheta: angle between surface normal and momentum vector of scattered gamma

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662 keV gammas 45° onto lead

17.10.2012Dorothea Pfeiffer

246727 of 10000000 (2.46727%) backscatteredtheta: angle between surface normal and momentum vector of scattered gamma