Study of weak interactions with. beta. -. cap alpha. angular correlations and the. beta. /sup +/ decay of /sup 18/Ne and /sup 14/O

Thesis/Dissertation · Fri Jan 01 04:00:00 EST 1982

OSTI ID:5983916

Hernandez, A M

A ..beta..-..cap alpha.. angular correlation measuring device has been designed and constructed. The apparatus will be used in a future experiment to measure the ..beta..(E/sub 0/ = 5.455 MeV) and ..cap alpha.. (2.148 MeV) directional correlation in the decay of /sup 20/Na as a function of the ..beta.. energy. Two ..cap alpha.. detectors and sixteen telescopic ..beta.. detectors allow for the simultaneous measurement of ..beta..-..cap alpha.. coincidences at 0/sup 0/, 25/sup 0/, 45/sup 0/, 65/sup 0/, 90/sup 0/, 115/sup 0/, 135/sup 0/, and 180/sup 0/ and their symmetrical counterparts with respect to the 0/sup 0/ ..-->.. 180/sup 0/ direction. A circulating gas system transports the /sup 20/Na activity produced by the /sup 20/Ne(p,n)/sup 20/Na reaction to a shielded counting area. The angular correlation effect to be measured is small and amounts to only about 1% of the main, isotropic component of the decay. The high symmetry of the apparatus as well as the use of appropriate geometrical corrections provide the necessary high accuracy. Adequate statistics may be obtained in reasonable times. In addition, two different simpler but interesting expriments were carried out; one is the ..beta../sup +/ decay of /sup 18/Ne and the other is the ..beta.. decay of /sup 14/O.

• Research Organization: Pittsburgh Univ., PA (USA)
• OSTI ID: 5983916
• Country of Publication: United States
• Language: English

Related Subjects

440101 -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
651322* -- Nuclear Properties & Reactions
A=6-19
Experimental-- Radioactive Decay-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALI METAL ISOTOPES
ALPHA DETECTION
ANGULAR CORRELATION
BASIC INTERACTIONS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA DETECTION
BETA-PLUS DECAY
BETA-PLUS DECAY RADIOISOTOPES
BRANCHING RATIO
CHARGED PARTICLE DETECTION
CORRELATIONS
DATA
DECAY
DETECTION
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FLUORINE 18
FLUORINE ISOTOPES
HOURS LIVING RADIOISOTOPES
INFORMATION
INTERACTIONS
ISOTOPES
LEVEL WIDTHS
LIGHT NUCLEI
MINUTES LIVING RADIOISOTOPES
NEON 18
NEON ISOTOPES
NITROGEN 14
NITROGEN ISOTOPES
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
OXYGEN 14
OXYGEN ISOTOPES
RADIATION DETECTION
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SODIUM 20
SODIUM ISOTOPES
STABLE ISOTOPES
WEAK INTERACTIONS