Status of developing HPGe γ-ray spectrum analysis code HYPERGAM

HYPERGAM, a new MS-Windows version of HPGe γ-ray spectrum analysis code HYPERMET, is being developed. Graphic user interface is provided and the control parameters of analysis are minimized. The semi-automatic algorithm for γ-ray peak analysis is adopted from the original HYPERMET routines whose performance is well known. The details of fitting result are graphically displayed so the analyst can determine reliability. Simpler methods for peak analysis and system non-linearity calibration are newly added. The present code is widely applicable to γ-ray spectroscopy including neutron activation analysis, but it is specifically designed to become a tool for automatic spectrum–isotopic analysis in environmental radiation monitoring.