Trapping [sup 82]Rb for [beta]-decay parity violation measurements
We report on the Los Alamos effort to measure the [beta]-nuclear spin correlation function in the Gamow-Teller decay of polarized [sup 82]Rb atoms confined in a time orbiting potential (TOP) magnetic trap as a means of probing the origin of parity violation in the electroweak interaction. As a first step in this experiment, we have recently trapped 6 million [sup 82]Rb (t[sub 1/2]=75s) atoms in a magneto-optical trap (MOT) that is coupled to a mass separator. The hyperfine structure of the D[sub 1] transition has been measured for the first time and the D[sub 2] line has been remeasured with higher precision. Moreover, we have recently transferred radioactive atoms from one MOT to another MOT where they have been retrapped and accumulated due to the improved vacuum in the second MOT. We are currently working to optically pump these retrapped atoms into the desired weak-field-seeking, stretched magnetic substate and to load them into the pure magnetic moment TOP trap which will serve as a rotating beacon of spin-polarized nuclei. Using a single (or small set of) positron detectors, we will measure the [beta]-nuclear spin asymmetry as a continuous function of both beta energy and [beta]-nuclear spin angle. Precise measurements initially at the 1[percent] level are planned. [copyright] [ital 1999 American Institute of Physics.]
- OSTI ID:
- 6078597
- Report Number(s):
- CONF-980894-; CODEN: APCPCS
- Journal Information:
- AIP Conference Proceedings, Vol. 457:1; Conference: Trapped charged particles and fundamental physics, Asilomar, CA (United States), 31 Aug - 4 Sep 1998; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY
GAMOW-TELLER RULES
P INVARIANCE
POLARIZED BEAMS
RUBIDIUM
RUBIDIUM 82
SPECTROSCOPY
TRAPPING
ALKALI METALS
BEAMS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
DECAY
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
INVARIANCE PRINCIPLES
ISOTOPES
METALS
MINUTES LIVING RADIOISOTOPES
NUCLEAR DECAY
NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
RUBIDIUM ISOTOPES
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