Cookie Policy

Welcome to SR-NIEL. This site uses cookies. Read our policy.

Logo HelMod small

SR-NIEL – 7

Screened Relativistic (SR) Treatment for NIEL Dose

Nuclear and Electronic Stopping Power Calculator

(version 10.2)

Proton High AMS02 small

NIEL Doses are calculated for Si and GaAs using different reactor spectra with ASTM-E722 standards and are compared to currently available NJOY calculators in SR-NIEL—7 website. Following are the results obtained with NJOY 2021 (with ENDF/B.VIII.0) and NJOY 2016 (with ENDF/B.VII.1).

 

Analysis with NJOY 2021 (ENDF/B.VIII.0)

NIEL dose was calculated with  NJOY 2021, with ENDF/B.VIII.0 cross section library, for neutrons in Si, using Robinson or Akkerman partition functions, as a function of the threshold energy. The reactor spectral fluences are those of ITN-ΣΣ (from [Angelescu et al. (1994)]), IPEN/MB-01 (from [Bitelli et al. (2009)]), TRIGA-Vienna (from [Cagnazzo (2014)]),  TRIGA ENEA Casaccia and TAPIRO ENEA Casaccia. TRIGA ENEA spectrum is measured at 100 kW in the Lazy Susan channel. TAPIRO ENEA spectrum is measured at 4 kW in the Radial channel 1. The values are divided by the one obtained with NJOY 2021, Si target, Robinson partition function, Ed=21 eV and ENDF/B.VIII.0.

njoy21 si ro

njoy21 si ak

 

NIEL dose calculated with NJOY 2021, with ENDF/B.VIII.0 cross section library, for neutrons in GaAs - Ga and As combined by means of the Bragg rule -, using Robinson or Akkerman partition functions, as a function of the threshold energy. The reactor spectral fluences are those of ITN-ΣΣ (from [Angelescu et al. (1994)]), IPEN/MB-01 (from [Bitelli et al. (2009)]), TRIGA-Vienna (from [Cagnazzo (2014)]),  TRIGA ENEA Casaccia and TAPIRO ENEA Casaccia. TRIGA ENEA spectrum is measured at 100 kW in the Lazy Susan channel. TAPIRO ENEA spectrum is measured at 4 kW in the Radial channel 1. The values are divided by the one obtained with NJOY 2021, GaAs target, Robinson partition function, Ed=21.5 eV (e.g. see [Campesato et al. (2019)]) and ENDF/B.VIII.0.

 GaAs NJOY21

GaAs NJOY21 akk

 

 

Analysis with NJOY 2016 (ENDF/B.VII.1)

NIEL dose was calculated with NJOY 2016, with ENDF/B.VII.1 cross section library, for neutrons in Si, using Robinson or Akkerman partition functions, as a function of the threshold energy. The reactor spectral fluences are those of ITN-ΣΣ (from [Angelescu et al. (1994)]), IPEN/MB-01 (from [Bitelli et al. (2009)]), TRIGA-Vienna (from [Cagnazzo (2014)]),  TRIGA ENEA Casaccia and TAPIRO ENEA Casaccia. TRIGA ENEA spectrum is measured at 100 kW in the Lazy Susan channel. TAPIRO ENEA spectrum is measured at 4 kW in the Radial channel 1. The values are divided by the one obtained with NJOY 2021, Si target, Robinson partition function, Ed=21 eV and ENDF/B.VIII.0. 

SI NJOY 2016

SI NJOY 2016 akk

 

NIEL dose calculated with NJOY 2016, with ENDF/B.VII.1 cross section library, for neutrons in GaAs - Ga and As combined by means of the Bragg rule -, using Robinson or Akkerman partition functions, as a function of the threshold energy. The reactor spectral fluences are those of ITN-ΣΣ (from [Angelescu et al. (1994)]), IPEN/MB-01 (from [Bitelli et al. (2009)]), TRIGA-Vienna (from [Cagnazzo (2014)]),  TRIGA ENEA Casaccia and TAPIRO ENEA Casaccia. TRIGA ENEA spectrum is measured at 100 kW in the Lazy Susan channel. TAPIRO ENEA spectrum is measured at 4 kW in the Radial channel 1. The values are divided by the one obtained with NJOY 2021, GaAs target, Robinson partition function, Ed=21.5 eV (e.g. see [Campesato et al. (2019)]) and ENDF/B.VIII.0.

GaAs NJOY 2016

GaAs NJOY 2016 akk

 

Comparison with ASTM-E722 standards

NIEL dose calculated with ASTM-E722-19ASTM-E722-14 and ASTM-E722-09 for neutrons in Si. The reactor spectral fluences are those of ITN-ΣΣ (from [Angelescu et al. (1994)]), IPEN/MB-01 (from [Bitelli et al. (2009)]), TRIGA-Vienna (from [Cagnazzo (2014)]),  TRIGA ENEA Casaccia and TAPIRO ENEA Casaccia. TRIGA ENEA spectrum is measured at 100 kW in the Lazy Susan channel. TAPIRO ENEA spectrum is measured at 4 kW in the Radial channel 1. The values are divided by the one obtained with NJOY 2021, Si target, Robinson partition function, Ed=21 eV and ENDF/B.VIII.0.

Si ASTM

 

NIEL dose calculated with ASTM-E722-19ASTM-E722-14 and ASTM-E722-09 for neutrons in GaAs. The reactor spectral fluences are those of ITN-ΣΣ (from [Angelescu et al. (1994)]), IPEN/MB-01 (from [Bitelli et al. (2009)]), TRIGA-Vienna (from [Cagnazzo (2014)]),  TRIGA ENEA Casaccia and TAPIRO ENEA Casaccia. TRIGA ENEA spectrum is measured at 100 kW in the Lazy Susan channel. TAPIRO ENEA spectrum is measured at 4 kW in the Radial channel 1. The values are divided by the one obtained with NJOY 2021, GaAs target, Robinson partition function, Ed=21.5 eV (e.g. see [Campesato et al. (2019)]) and ENDF/B.VIII.0.

GaAs ASTM

 

NIEL dose calculated with Kerma function of ASTM-E722-19ASTM-E722-14 and ASTM-E722-09 for neutrons in GaAs. The reactor spectral fluences are those of ITN-ΣΣ (from [Angelescu et al. (1994)]), IPEN/MB-01 (from [Bitelli et al. (2009)]), TRIGA-Vienna (from [Cagnazzo (2014)]),  TRIGA ENEA Casaccia and TAPIRO ENEA Casaccia. TRIGA ENEA spectrum is measured at 100 kW in the Lazy Susan channel. TAPIRO ENEA spectrum is measured at 4 kW in the Radial channel 1. The values are divided by the one obtained with NJOY 2021, GaAs target, Robinson partition function, Ed=21.5 eV (e.g. see [Campesato et al. (2019)]) and ENDF/B.VIII.0.

GaAs Kerma

 

 

References

ASTM E722-19 (2019).

ASTM E722-14 (2014).

ASTM E722-09 (2009).

T. Angelescu et al., Nucl. Instr. and Meth. in Phys. Res., vol. 345, 2, pp. 303-307, 1994

U. Bitelli and F.P. Martins, Brazilian Journal of Physics, vol. 39, pp. 39-43, 2009

M. Cagnazzo et al., 23rd International Conference Nuclear Energy for New Europe, 2014