Lifetimes of the 2893- and 3464-keV levels of $sup 40$Ar
The recoil-distance method has been used in conjunction with the $sup 27$Al($sup 18$O, p$alpha$$)$$sup 40$Ar and $sup 37$Cl($alpha$, p)$sup 40$Ar reactions to measure mean lifetimes of 4.2 +- 2.0 and 930 +- 50 ps for the $sup 40$Ar 2893- and 3464-keV levels, respectively. The excitation energies of these two levels were deduced to be 2892.60 +- 0.11 and 3464.48 +- 0.13 keV, respectively. The 3464-keV level is assigned J/sup $pi$/ = 6$sup +$ on the basis of the lifetime, the $gamma$-ray angular distribution, and previous $sup 38$Ar(t, p)$sup 40$Ar results. The E2 transition strengths of the $sup 40$Ar 0$sup +$- 2$sup +$-4$sup +$-6$sup +$ ground-state band are compared to those of $sup 42$Ca and to shell-model calculations. (AIP)
- Research Organization:
- Brookhaven National Laboratory, Upton, New York 11973
- NSA Number:
- NSA-33-010747
- OSTI ID:
- 4122792
- Journal Information:
- Phys. Rev., C, v. 12, no. 5, pp. 1392-1395, Journal Name: Phys. Rev., C, v. 12, no. 5, pp. 1392-1395; ISSN PRVCA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Mean lifetime of the 1612 keV level in $sup 37$Ar
Structure of negative parity high-spin states in /sup 34/Cl
Related Subjects
642403*
ALPHA PARTICLES-- ALUMINIUM 27-- ALUMINIUM 27 TARGET-- COMPOUND-NUCLEUS REACTIONS-- MEV RANGE 10-100-- OXYGEN 18 REACTIONS-- PROTONS
ALPHA REACTIONS-- CHLORINE 37-- CHLORINE 37 TARGET-- MEV RANGE 10-100-- PROTONS-- THREE-NUCLEON TRANSFER REACTIONS
ANGULAR DISTRIBUTION ENERGY LEVELS-- ENERGY-LEVEL TRANSITIONS-- HIGH SPIN STATES-- LIFETIME-- PARITY-- PROBABILITY-- SHELL MODELS-- SPIN
N68531* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
39 <= A <= 58--Energy Levels & Transitions