Alpha M —: An improved computer program for determining radioisotopes by least-squares resolution of the gamma-ray spectra

Neutron activation analysis for osmium and ruthenium in platinum

“…The method of least squares has been applied with consider able success to resolve complex gamma-ray spectra (65)(66)(67)(68)(69).…”

Multiple-Ion Diffusion—I. Techniques for Measuring and Calculating Apparent Self-Diffusion Coefficients in Heteroionic Systems

“…The composite radiation data (85Sr, ~8Mg, 8~Rb, Z2Na) were automatically punched on cards acceptable as computer input. Two computer programs were used, (a) the Alpha-M y-spectrum resolving program of Schonfeld (1967) was adopted to resolve the complex spectra to its component parts (85Sr, ~SMg, S~Rb and 22Na); (b) the computer program used previously (Brown et al, 1968) for calculating diffusion coefficients was replaced with a probittransformation calculation since it was more readily adaptable to computer programming and provided a greater degree of precision. It also permitted the simultaneous calculation of a variable number of diffusion coefficients common to heteroionic soil systems.…”

“…While this method was satisfactory for dual tagging experiments, the approach was not practical where more than two T-ray spectra must be resolved. For this reason, the revised Alpha-M computer program (Schonfeld, 1967) for resolving 3' spectra was made a part of the multipleion diffusion procedure. The Alpha-M program represents an improved computer program for determining radioisotope concentration.…”

Modern trends in radiochemical analytical methods

“…In analysing the data from this system, four selected areas containing peaks for the nuclides to be measured are summed so that each sum can be treated as a single spectrum, and these as well as the singles spectra are analysed with a least squares technique on a Univac 1108 computer using a programme called Alpha M. 13 This programme contains provisions for correcting for gain and threshold shifts of the detector-amplifier system.…”