The lifetimes of the first excited states in 21Ne and 21Na

✍ Scribed by A. Bamberger; K.P. Lieb; B. Povh; D. Schwalm

• Publisher: Elsevier Science
• Year: 1968
• Tongue: English
• Weight: 223 KB
• Volume: 111
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(68)90156-5

✦ Synopsis

The lifetimes of the J~ = ~+ mirror states at Ex = 350.5+1.0 keV and 332-¢-I keV in 2~Ne and 21Na, respectively, have been measured with the recoil-distance method. The two nuclei were produced by *°Ne bombardment of a 2H gas target. The results are z = 224-3 ps and 14±3 ps for the states in ZlNe and 2tNa, respectively. The measured lifetimes compare well with those calculated in the strong-coupling model taking into account band mixing. [ E[ NUCLEAR REACTIONS 2H(Z°Ne, p), (2°Ne, n), E = 13.95 MeV; measured ~7(Ey), I Doppler shift. ~Ne, 2~Na levels deduced T t. Enriched target, Ge(Li) detector.