【摘要】 研究了各种实验条件对γ射线质量吸收系数测量结果的影响,提出了用“单道阈值法”测量质量吸收系数的新方法,该法可在“宽束”条件下进行测量,简化了笨重的铅准直系统以及对测量条件的严格要求,能达到相当的测量精度。更多还原

【Abstract】 The influences of variant experiment conditions on the measurement results of the mass absorption coefficient for gamma-rays are studied.The method" regulating threshold of single channel" is proposed as a new way for measuring the mass absorption coefficient. Using this method, the mass absorption coefficient may be measured in wide beam of gamma-rays, the heavy lead collimation system and harsh measurement conditions are omited and the measurement precision is improved.更多还原