Towards a proper modeling of detector and source characteristics in Monte Carlo simulations

被引:44
作者
García-Talavera, M [1 ]
Neder, H
Daza, MJ
Quintana, B
机构
[1] Univ Salamanca, Grp Fis Nucl, E-37008 Salamanca, Spain
[2] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany
关键词
D O I
10.1016/S0969-8043(99)00244-4
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
We performed a systematic study on the influence of different source configurations on the reliability of Monte Carlo calculations for the response of Ce detectors. Calculated full-energy peak efficiencies are compared to experimental values in the energy range 46-1800 keV. Setups with different characteristics are considered, from point-like to volume sources. Among the latter there are filters and aqueous matrices and sediments in Petri boxes or Marinelli beakers. The analysis of the deviations between experimental and calculated results for the different configurations enables us to detect inaccuracies in the description of detector and source characteristics and to improve them. By means of this procedure satisfactory results of the efficiencies were obtained in the whole energy range. For all setups, the deviations average 1.5%, except for the sediment sources where they are up to 3.3%. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:777 / 783
页数:7
相关论文
共 10 条
[1]   EFFICIENCY CALIBRATION OF SEMICONDUCTOR-DETECTORS BY PRIMARY STANDARD SOURCES AND MONTE-CARLO CALCULATIONS [J].
DEBERTIN, K ;
GROSSWENDT, B .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH, 1982, 203 (1-3) :343-352
[2]  
Debertin K., 1988, Gammaand X-Ray Spectrometry with Semiconductor Detectors
[3]   COINCIDENCE-SUMMING CORRECTIONS FOR EXTENDED SOURCES IN GAMMA-RAY SPECTROMETRY USING MONTE-CARLO SIMULATION [J].
DECOMBAZ, M ;
GOSTELY, JJ ;
LAEDERMANN, JP .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1992, 312 (1-2) :152-159
[4]  
GARDNER RP, 1980, NUCL INST METHODS, V176, P354
[5]  
*GEANT, 1987, DET DESCR SIM TOOL
[6]   Monte-Carlo calculation of the spatial dependence of the coaxial HPGe detector efficiency for point sources [J].
Korun, M ;
Likar, A ;
Vidmar, T .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1997, 390 (1-2) :203-208
[7]   GAMMA-RAY SPECTROSCOPY OF VOLUMINOUS SOURCES - CORRECTIONS FOR SOURCE GEOMETRY AND SELF-ATTENUATION [J].
OVERWATER, RMW ;
BODE, P ;
DEGOEIJ, JJM .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1993, 324 (1-2) :209-218
[8]   AN EMPIRICAL-METHOD TO DETERMINE COINCIDENCE-SUMMING CORRECTIONS IN GAMMA-SPECTROMETRY [J].
QUINTANA, B ;
FERNANDEZ, F .
APPLIED RADIATION AND ISOTOPES, 1995, 46 (09) :961-964
[9]   A MONTE-CARLO BASED METHOD OF INCLUDING GAMMA SELF-ABSORPTION FOR THE ANALYSIS OF ENVIRONMENTAL-SAMPLES [J].
SANCHEZ, F ;
NAVARRO, E ;
FERRERO, JL ;
MORENO, A ;
ROLDAN, C ;
BAEZA, A ;
PANIAGUA, J .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1991, 61 (04) :535-540
[10]  
SELTZER SM, 1981, NUCL INSTRUM METHODS, V188, P133, DOI 10.1016/0029-554X(81)90332-3