Ibm-704 Codes for Predicting the Response of Gamma-Ray Scintillation Counters

Abstract

Abstract. This paper is a manual for operating several codes for an IBM-70l(-automatic computor to calculate the pulse-height response functions NOTICEThis document contains information of a preliminary nature and was prepared primarily for internal use at the Oak Ridge National Laboratory. It is subject to revision or correction and therefore does not represent a final report.fbe information is not to be abstracted. reprinted or otherwise given public <lisf«min«ti#» without the approval of the OKM. patent brads* Legal and Information Control Dcpartsacet,, P.'or.

Nanometer site analysis of electron tracks and dose localization in bio-cells exposed to X-ray irradiation

“…In the photon code, the cross sections for the photon interactions (i.e., coherent scattering, photoelectric effect, Compton scattering and pair production) are taken from Storm and Israel (1970) [10], and algorithms and related data by several papers [11][12][13][14] are used. Particular attention was paid to the electron track code because the behavior of electrons with low energies below several hundred eV has some uncertainty among the codes reported depending on the electron collision cross sections built in the code [1,4,[15][16][17][18].…”

Radial Secondary Electron Dose Profiles and Biological Effects in Light-Ion Beams Based on Analytical and Monte Carlo Calculations using Distorted Wave Cross Sections

“…The ability of Monte Carlo simulation methods to describe photon transport in complex geometries has been established from research during the last five decades (Hayward and Hubbell, 1954;Zerby, 1963;Berger and Seltzer, 1972;Chan and Doi, 1983;Ljungberg and Strand, 1989). The most accurate DCSs available are given in numerical form and, therefore, advanced Monte Carlo codes make use of extensive databases.…”

Energy spectra of secondary electrons in water vapour

“…Photon energy / eV To this end, data given by Hough [8] were used in calculations. The energy and the direction of an electron-positron pair was sampled by Zerby's scheme [9], and cross sections for the elements H and O were taken from a compilation by Storm and Israel [t0]. Figure 2 presents the water vapour cross sections assembled as described above using the cross sections of hydrogen and oxygen atoms.…”

“…The number of photon The fitted lines in Fig. 6 were produced using (7), (8) and (9). After appropriate corrections for the interaction probability in a thin target these functions can be used, for example, for the input into electron track structure computer codes for radiation action assessment.…”