External bremsstrahlung spectra excited by /sup 204/Tl. beta. particles in thick targets

Journal Article · Sun Jun 01 04:00:00 EDT 1980 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.21.1884· OSTI ID:5460294

Powar, M S; Ahmad, S; Singh, M

Spectral distributions of bremsstrahlung produced by /sup 204/Tl ..beta.. particles in thick targets of Perspex, aluminum, copper, tin, and lead have been measured in a sandwich geometry. The contributions of internal bremsstrahlung produced along with the ..beta.. particles have been determined by magnetic field deflection as well as the Z=O extrapolation method. Experimental results agree with Bethe-Heitler Born-approximation theory, corrected for Coulomb-field effects for low- and medium-Z targets, but show 25% positive deviation for high-Z targets. Again it is found that the bremsstrahlung produced in low-Z targets like Perspex is comparable with internal bremsstrahlung, and the corrections for its contribution to measurements by earlier workers can lead to large uncertainties.

• Research Organization: Nuclear Science Laboratories, Department of Physics, Punjabi University, Patiala 147 002, India
• OSTI ID: 5460294
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 21:6; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640301* -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALUMINIUM
BETA PARTICLES
BETHE-HEITLER THEORY
BREMSSTRAHLUNG
CHARGED PARTICLES
COLLISIONS
COPPER
ELECTROMAGNETIC RADIATION
ELECTRON COLLISIONS
ELEMENTS
ESTERS
LEAD
METALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PERSPEX
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYACRYLATES
POLYMERS
POLYVINYLS
RADIATIONS
SPECTRA
TIN
TRANSITION ELEMENTS