Response of a proportional counter to 37Ar and 71Ge: Measured spectra versus Geant4 simulation

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:373

Article

Abdurashitov, D. N.¹  Malyshkin, Yu. M.^1,2  Matushko, V. L.¹  Suerfu, B.³ 

[1] Russian Acad Sci, Inst Nucl Res, Prospekt 60 Letiya Oktyabrya 7a, Moscow 117312, Russia

[2] Pontificia Univ Catolica Chile, Santiago, Chile

[3] Princeton Univ, Princeton, NJ 08544 USA

关键词: Atomic deexcitation;    Auger cascades;    Geant4;    Proportional counter;    Model response;   

DOI  :  10.1016/j.nimb.2016.02.029

来源: Elsevier

【 摘 要 】

The energy deposition spectra of Ar-37 and Ge-71 in a miniature proportional counter are measured and compared in detail to the model response simulated with Geant4. A certain modification of the Geant4 code, making it possible to trace the deexcitation of atomic shells properly, is suggested. Modified Geant4 is able to reproduce a response of particle detectors in detail in the keV energy range. This feature is very important for the laboratory experiments that search for massive sterile neutrinos as well as for dark matter searches that employ direct detection of recoil nuclei. This work demonstrates the reliability of Geant4 simulation at low energies. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

Free