Decay of /sup 50/V

Journal Article · Fri Jun 01 04:00:00 EDT 1984 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.29.2294· OSTI ID:6526508

Alburger, D E; Warburton, E K; Cumming, J B

A 4.25-kg sample of vanadium metal was counted with a high purity Ge detector for 135.5 d. Ninety-six peaks were observed in the ..gamma..-ray spectrum between 220 and 2615 keV, all but one of which could be assigned to known contaminant radioactivities mostly contained in the V sample itself. After making a 4.0% calculated correction for the intensity of a /sup 234/Pa/sup m/ ..gamma.. ray of 1554.1(5) keV, the unassigned peak had an energy of 1553.77(6) keV and contained 1020(70) counts. This energy agrees with a recent precision determination of 1553.768(8) keV for the ..gamma.. ray from the first excited state of /sup 50/Ti following the ..beta../sup -/ decay of /sup 50/Sc. The 1554-keV ..gamma.. ray from the V sample is assigned to the electron capture decay of /sup 50/V to /sup 50/Ti. Based on an absolute ..gamma..-ray efficiency calibration of the system, a partial half-life T/sub 1/2/ = 1.5(3) x 10/sup 17/ yr and logf/sub 0/t = 23.4(1) were derived for the /sup 50/V e.c. branch. The expected 783.3-keV ..gamma.. ray, which would follow the ..beta../sup -/ decay of /sup 50/V to /sup 50/Cr, was in an unresolved region of contaminant peaks allowing only an upper limit of <560 counts to be placed on its intensity. This corresponds to T/sub 1/2/>4.3 x 10/sup 17/ yr and logf/sub 0/t>24.0 for the ..beta../sup -/ branch. The total half-life derived for /sup 50/V is T/sub 1/2/ = 1.5/sub -0.7//sup +0.3/ x 10 /sup 17/ yr.

• Research Organization: Brookhaven National Laboratory, Upton, New York 11973
• OSTI ID: 6526508
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 29:6; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651522* -- Nuclear Properties &amp; Reactions
A=39-58
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651523 -- Nuclear Properties &amp; Reactions
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Experimental-- Energy Levels &amp; Transitions-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY
BETA-MINUS DECAY RADIOISOTOPES
CHROMIUM 50
CHROMIUM ISOTOPES
DECAY
ELECTRON CAPTURE RADIOISOTOPES
ENERGY LEVELS
EVEN-EVEN NUCLEI
FT VALUE
GAMMA SPECTRA
HALF-LIFE
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MINUTES LIVING RADIOISOTOPES
NUCLEI
ODD-ODD NUCLEI
PARITY
PARTICLE PROPERTIES
RADIOISOTOPES
SCANDIUM 50
SCANDIUM ISOTOPES
SECONDS LIVING RADIOISOTOPES
SPECTRA
SPIN
STABLE ISOTOPES
TITANIUM 50
TITANIUM ISOTOPES
VANADIUM 50
VANADIUM ISOTOPES
YEARS LIVING RADIOISOTOPES