Thick-target external-bremsstrahlung spectra of [sup 147]Pm and [sup 35]S [beta] rays

Journal Article · Sun Aug 01 00:00:00 EDT 1993 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.48.1308· OSTI ID:7369063

Dhaliwal, A S ^[1]; Powar, M S; Singh, M ^[2]

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1. School of Basic and Applied Sciences, Thapar Institute of Engineering and Technology, Patiala 147 001 (India)
2. Physics Department, Punjabi University, Patiala 147 002 (India)

External-bremsstrahlung spectra excited by soft [beta] particles of [sup 147]Pm ([ital E][sub [beta]][sup max]=225 keV) and [sup 35]S ([ital E][sub [beta]][sup max]=167 keV) in targets of Al, Cu, Sn, and Pb have been studied. The experimental and theoretical results are compared in terms of the number of photons of energy [ital k] per [ital m][sub 0][ital c][sup 2] per unit photon yield to exclude the uncertainty in the source strength measurement and overcome the inherent inadequacy of the normalization procedure used by earlier workers. The results of present measurements for medium- and high-[ital Z] elements show better agreement with the theory of Tseng and Pratt [Phys. Rev. A 3, 1714 (1976)] than with Elwert's corrections [Ann. Phys. (N.Y.) 34, 78 (1939)] to the Bethe-Heitler theory [Proc. R. Soc. London Ser. A 14, 83 (1934)], particularly at the higher-energy ends. However, for low-[ital Z] elements, both theories are found to be adequate.

• OSTI ID: 7369063
• Journal Information: Physical Review A; (United States), Vol. 48:2; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BREMSSTRAHLUNG
SPECTRA
PROMETHIUM 147
BETA PARTICLES
SULFUR 35
ALUMINIUM
BETHE-HEITLER THEORY
COPPER
LEAD
PHOTONS
TIN
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BOSONS
CHARGED PARTICLES
DAYS LIVING RADIOISOTOPES
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ELEMENTS
EVEN-ODD NUCLEI
INTERMEDIATE MASS NUCLEI
ISOTOPES
LIGHT NUCLEI
MASSLESS PARTICLES
METALS
NUCLEI
ODD-EVEN NUCLEI
PROMETHIUM ISOTOPES
RADIATIONS
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SULFUR ISOTOPES
TRANSITION ELEMENTS
YEARS LIVING RADIOISOTOPES
663210* - Ground-State Radioactivity- (1992-)