Measurements of gamma-ray emission probabilities of 241, 243Am and 239Np. Issue 11 (1st November 2016)

• Record Type: Journal Article
• Authors: Terada, Kazushi; Nakamura, Shoji; Nakao, Taro; Kimura, Atsushi; Iwamoto, Osamu; Harada, Hideo; Takamiya, Koichi; Hori, Jun-ichi
• Is Part Of: Journal of nuclear science and technology. Volume 53:Issue 11(2016)
• Page Start: 1881
• Page End: 1888
• Publication Date: 2016-11-01
• Subjects: Gamma-ray emission probability -- americium 241 -- americium 243 -- neptunium 239 -- neutron capture cross section -- PHITS; Nuclear engineering -- Periodicals; Nuclear physics -- Periodicals; Nuclear energy -- Periodicals; 621.4805
• DOI: 10.1080/00223131.2016.1174167
• Languages: English
• ISSNs: 0022-3131

Abstract

ABSTRACT: Gamma-ray emission probabilities of 241, 243 Am and 239 Np have been precisely measured with gamma- and alpha-ray spectroscopic methods. The activities of the samples were determined by measuring alpha particles using a Si semiconductor detector. Gamma rays emitted from the samples were measured with a planar type High-Purity Germanium (HPGe) detector. An efficiency curve of the HPGe detector was derived with uncertainties from 0.7% to 2.5% by combining measured efficiencies and Monte Carlo simulation. The gamma-ray emission probabilities for the major gamma rays of these nuclides were determined with uncertainties less than 1.2%.