Superallowed Fermi. beta. decay: lifetimes of /sup 34/Cl, /sup 38/K/sub m/, /sup 42/Sc, /sup 46/V, and /sup 50/Mn

Journal Article · Tue Jun 01 04:00:00 EDT 1976 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.13.2517· OSTI ID:7275717

Wilkinson, D H; Alburger, D E

The half-lives of the Fermi superallowed ..beta.. transitions of /sup 34/Cl, /sup 38/K/sub m/, /sup 42/Sc, /sup 46/V, and /sup 50/Mn have been measured by multiscaling ..beta.. rays detected in a plastic scintillator. The activities were produced in the reactions /sup 32/S(t,n)/sup 34/Cl at E/subt/=3.0 MeV, /sup 35/Cl(..cap alpha..,n)/sup 38/K/sub m/ at E/sub alpha/=8.0 MeV, /sup 42/Ca(p,n)/sup 42/Sc at E/subp/=10 MeV, /sup 46/Ti(p,n)/sup 46/V at E/subp/=10 MeV, and /sup 50/Cr(p,n)/sup 50/Mn at E/subp/=10 MeV. Results for the half-lives (in msec) were as follows: /sup 34/Cl, 1525.2 +- 1.1; /sup 38/K/sub m/, 922.3 +- 1.1; /sup 42/Sc, 680.98 +- 0.62; /sup 46/V, 424.01 +- 0.47; and /sup 50/Mn, 282.72 +- 0.26. Comparisons are made with previous measurements; the systematics of the superallowed Fermi ..beta.. emitters are discussed. The value for the vector coupling constant g/sub beta//subV/subR/ including the ''inner'' radiative correction is deduced to be g/sub beta//subV/subR/= (1.41220 +- 0.00043) x 10/sup -49/ erg cm/sup 3/. (AIP)

• Research Organization: Brookhaven National Laboratory, Upton, New York 11973
• OSTI ID: 7275717
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 13:6; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
ALPHA REACTIONS
ARGON 38
ARGON ISOTOPES
BARYON REACTIONS
BARYONS
BASIC INTERACTIONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CALCIUM 42
CALCIUM ISOTOPES
CHARGE-EXCHANGE REACTIONS
CHARGED-PARTICLE REACTIONS
CHLORINE 34
CHLORINE 35
CHLORINE ISOTOPES
CHROMIUM 50
CHROMIUM ISOTOPES
DIRECT REACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
EVEN-EVEN NUCLEI
FERMI INTERACTIONS
FERMIONS
HADRON REACTIONS
HADRONS
HALF-LIFE
INTERACTIONS
INTERMEDIATE MASS NUCLEI
ISOMERIC NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LIGHT NUCLEI
MANGANESE 50
MANGANESE ISOTOPES
MEV RANGE
MEV RANGE 01-10
MEV RANGE 10-100
MINUTES LIVING RADIOISOTOPES
MULTI-NUCLEON TRANSFER REACTIONS
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
POTASSIUM 38
POTASSIUM ISOTOPES
PROTON REACTIONS
RADIOISOTOPES
SCANDIUM 42
SCANDIUM ISOTOPES
SECONDS LIVING RADIOISOTOPES
STABLE ISOTOPES
SULFUR 32
SULFUR 34
SULFUR ISOTOPES
THREE-NUCLEON TRANSFER REACTIONS
TITANIUM 46
TITANIUM ISOTOPES
TRANSFER REACTIONS
TRITON REACTIONS
TWO-NUCLEON TRANSFER REACTIONS
VANADIUM 46
VANADIUM ISOTOPES
WEAK INTERACTIONS