Test of time-reversal symmetry in the. beta. decay of /sup 19/Ne

Journal Article · Mon Jan 30 04:00:00 EST 1984 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.52.337· OSTI ID:6856290

Hallin, A L; Calaprice, F P; MacArthur, C W; Piilonen, L E; Schneider, M B; Schreiber, D F

With a new detection method, the upper limit on the time-reversal--noninvariant triple angular correlation Jx(p/sub e/ x p/sub ..nu../)/E/sub e/E/sub ..nu../ in the nuclear decay /sup 19/Ne..-->.. /sup 19/F+e/sup +/+..nu.. has been reduced. Polarized /sup 19/Ne atoms from an atomic beam are captured in a holding cell, where the decay positrons and recoil ions are observed. The new value for the asymmetry parameter for this correlation is D = 0.0004 +- 0.0008, which is consistent with time-reversal symmetry.

• Research Organization: Princeton University, Princeton, New Jersey 08544
• OSTI ID: 6856290
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 52:5; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

651322* -- Nuclear Properties & Reactions
A=6-19
Experimental-- Radioactive Decay-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR CORRELATION
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
ASYMMETRY
ATOMIC BEAMS
BARYONS
BEAMS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY
BETA-PLUS DECAY RADIOISOTOPES
COINCIDENCE SPECTROMETRY
CORRELATIONS
COUPLING CONSTANTS
DECAY
ELEMENTARY PARTICLES
EVEN-ODD NUCLEI
FERMIONS
FLUORINE 19
FLUORINE ISOTOPES
HADRONS
INVARIANCE PRINCIPLES
ISOTOPES
LEPTONS
LIGHT NUCLEI
MATRIX ELEMENTS
MONTE CARLO METHOD
NEON 19
NEON ISOTOPES
NEUTRONS
NUCLEI
NUCLEONS
ODD-EVEN NUCLEI
POLARIZATION
POSITRONS
RADIOISOTOPES
RECOILS
SECONDS LIVING RADIOISOTOPES
STABLE ISOTOPES
T INVARIANCE
TESTING
VALIDATION