Nuclear-spectroscopic measurements related to the design of /sup 79/Br, /sup 81/Br, and /sup 87/Rb solar-neutrino detectors

Thesis/Dissertation · Sat Jan 01 04:00:00 EST 1983

OSTI ID:5793634

Burks, B L

Spectroscopic properties for low-lying states in /sup 79/Kr, /sup 81/Kr, and /sup 87/Sr were studied using the /sup 78/Kr(dvector,p)/sup 79/Kr, /sup 80/Kr(dvector,p)/sup 81/Kr, and /sup 86/Sr(dvector,p)/sup 87/Sr reactions initiated by 11 MeV purely vector-polarized deuteron beams at Triangle Universities Nuclear Laboratory. A Distorted-Wave Born Approximation analysis of the resulting angular distributions of cross section and vector analyzing power enabled the assignment of spin-parity and extraction of neutron spectroscopic factors for 48 nuclear states. A technique for preparation of thin targets using ion implantation was developed as a means to improve spectrum resolution by reducing projectile straggling in the entrance and exit foils of gas cell targets. The neutrino capture process, sigma + (Z,A) ..-->.. (Z + 1,A) + e/sup -/, is equivalent to inverse beta decay. In order to interpret the results of a solar neutrino experiment using /sup 79/Br, /sup 81/Br, or /sup 87/Rb, low-lying states in the daughter nuclei, /sup 79/Kr, /sup 81/Kr, and /sup 87/Sr, must be studied. In particular, the states in the daughter nuclei that have appropriate spin-parity to be populated by allowed inverse beta decay must be identified.

• Research Organization: North Carolina Univ., Chapel Hill (USA)
• OSTI ID: 5793634
• Country of Publication: United States
• Language: English

Related Subjects

440104 -- Radiation Instrumentation-- High Energy Physics Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
651723* -- Nuclear Properties & Reactions
A=90-149
Experimental-- Energy Levels & Transitions-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
ANALYZING POWER
ANGULAR DISTRIBUTION
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BORN APPROXIMATION
BROMINE 79
BROMINE 81
BROMINE ISOTOPES
CAPTURE
CROSS SECTIONS
DATA
DAYS LIVING RADIOISOTOPES
DISTRIBUTION
DWBA
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY LEVELS
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FERMIONS
HOURS LIVING RADIOISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KRYPTON 79
KRYPTON 81
KRYPTON ISOTOPES
LEPTON REACTIONS
LEPTONS
MASSLESS PARTICLES
MEASURING INSTRUMENTS
NEUTRINO REACTIONS
NEUTRINOS
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
RADIATION DETECTORS
RADIATIONS
RADIOISOTOPES
RUBIDIUM 87
RUBIDIUM ISOTOPES
SECONDS LIVING RADIOISOTOPES
SOLAR NEUTRINOS
SOLAR PARTICLES
SOLAR RADIATION
SPECTROSCOPIC FACTORS
STABLE ISOTOPES
STELLAR RADIATION
STRONTIUM 87
STRONTIUM ISOTOPES
YEARS LIVING RADIOISOTOPES