34 Matching Results

Search Results

Advanced search parameters have been applied.

Recoil properties of $sup 11$C and $sup 18$F produced in the interaction of 1- to 11.5-GeV protons with $sup 27$Al. Progress report

Description: This work is a continuation of the recoil study of radioactive products from the proton bombardment of Al. Recoil properties of $sup 11$C and $sup 18$F are reported for proton energies of 1, 3, 6, and 11.5 GeV. Values of 2W(F+B) are tabulated and plotted. 2 figures, 4 tables (RWR)
Date: April 30, 1976
Partner: UNT Libraries Government Documents Department

Cross sections for the Al(n,xn) and Al(n,x$gamma$) reaction between 1 and 20 MeV

Description: Differential cross sections for the production of secondary neutrons and photons from aluminum have been measured at 127$sup 0$ (lab) for incident neutron energies in the range 1 to 20 MeV. An electron linac was used as a neutron source with a white spectrum. Incident neutron energies were determined using time-of-flight techniques for a source-to-sample distance of 48 m. Secondary spectra were determined by unfolding the pulse-height distributions observed in a NE-213 scintillation counter. The results are compared to the current evaluated data file (ENDF/B-IV, MAT 1193). (auth)
Date: January 1, 1976
Creator: Morgan, G.L. & Perey, F.G.
Partner: UNT Libraries Government Documents Department

LASL status report to the U. S. Nuclear Data Committee

Description: From U. S. nuclear data committee meeting; Argonne, Illinois, USA (28 Nov 1973). This laboratory report was contributed to the U. S. Nuclear Data Committee Meeting of November 28--29, 1973, at Argonne National Laboratory. It contains papers on standards; neutron data applications; basic physics; nuclear data for materials analysis, safeguards, and environmental matters; and controlled thermonuclear research. The papers range in length from several pages to abstract size. Those with significant amounts of data are separately title listed. (RWR)
Date: January 1, 1973
Creator: Moore, M.S.
Partner: UNT Libraries Government Documents Department

Review of evaluated cross section data for air and ground constituents

Description: From EMP technical meeting; Kirtland AFB, New Mexico, USA (25 Sep 1973). During the past few years the Defense Nuclear Agency has sponsored a radiation transport program that has the goal of substantially reducing uncertainties in predictions of radiation environments. Important aspects of the program have been to provide new cross section measurements directed particularly at areas of ignorance in the data for several important materials and to maintain up-to-date cross section evaluations that fully incorporate the new experimental information. As a result, significant improvements have been made in recent years in the availability and accuracy of evaluated data for a number of materials, particularly in the area of gamma ray production. In the present paper a review is given of the status of evaluated cross section data for common air and ground constituents including C. N. O. Al. Si, La, and Fe. Particular emphasis is given to the air materials and to recent improvements in gamma ray production data. Comparisons of presently available evaluated data with the results of extensive new experimental measurements are given, and summaries of estimated errors in the evaluated data are presented. The increased accuracy of cross sections for other processes, such as neutron inelastic scattering and charged- particle production, that results from the improved gamma ray data is discussed. In addition, likely future trends in the evaluated data sets for air and ground constituents are outlined. (auth)
Date: January 1, 1973
Creator: Young, P.G.
Partner: UNT Libraries Government Documents Department

Neutron cross sections. Volume I. Resonance parameters

Description: In contrast to earlier editions, which presented in compact form a summary of the complete store of the neutron data files, this edition aims to provide those portions of neutron data considered to be of prime importance and best suited for inclusion in ready reference form. This volume contains thermal cross sections, resonance properties, resonance parameters, and bibliography for nuclides from H to /sup 257/Fm. Notation and nomenclature, considerations involved in the recommendations, and a table of energyordered resonances are also included. (RWR)
Date: June 1, 1973
Creator: Mughabghab, S.F. & Garber, D.I.
Partner: UNT Libraries Government Documents Department