Identification and lifetime determination of the $6^{+}$ member of the ground-state rotational band in ${}^{22}{Ne}$

The

{}^{19}F (α, p γ) {}^{22}{Ne}

reaction was used to measure

p - γ

angular correlations for the 6.31 and 6.34 MeV states in

{}^{22}{Ne}

. The mean lifetimes of the two levels were determined to be 78 ± 15 fs (6.31 MeV) and

24_{- 17}^{+ 15}

fs (6.34 MeV) using the same reaction and the Doppler-shift attenuation method. Unambiguous spin and parity assignments of

6^{+}

and

4^{+}

were obtained for the 6.31 and 6.34 MeV states, respectively. An earlier identification of the 6.34 MeV state as the

6^{+}

member of the ground state rotational band is therefore incorrect. The

B (E 2)

value of the 6.31 MeV (

6^{+}

) → 3.36 MeV (

4^{+}

) transition is in good agreement with recent large-basis shell model calculations, and the 6.31 MeV state may be identified as the

6^{+}

member of the ground state rotational band of

{}^{22}{Ne}

This publication has 14 references indexed in Scilit:

Identification and lifetime determination of the6+member of the ground-state rotational band inNe22