Multi-intruder structures in
P
Pにおけるマルチイントルーダー構造
Bender, P. C.*; Tabor, S. L.*; Tripathi, V.*; Hoffman, C. R.*; Hamilton, L.*; Volya, A.*; Clark, R. M.*; Fallon, P.*; Macchiavelli, A. O.*; Paschalis, S.*; Petri, M.*; Carpenter, M. P.*; Janssens, R. V. F.*; Lauritsen, T.*; McCutchan, E. A.*; Seweryniak, D.*; Zhu, S.*; Chiara, C. J.*; Chen, X.*; Reviol, W.*; Sarantites, D. G.*; 藤 暢輔

Bender, P. C.*; Tabor, S. L.*; Tripathi, V.*; Hoffman, C. R.*; Hamilton, L.*; Volya, A.*; Clark, R. M.*; Fallon, P.*; Macchiavelli, A. O.*; Paschalis, S.*; Petri, M.*; Carpenter, M. P.*; Janssens, R. V. F.*; Lauritsen, T.*; McCutchan, E. A.*; Seweryniak, D.*; Zhu, S.*; Chiara, C. J.*; Chen, X.*; Reviol, W.*; Sarantites, D. G.*; Toh, Yosuke
24MeVの
Oビームと
Oターゲットの反応で生じるプロトンと同時計数をとった
崩壊の解析によって
Pの励起準位は大幅に拡張された。軽い荷電粒子はMicroballによって検出され、同時に放出される多重
線はGammasphereで検出された。多くの新しい
線遷移が同定され、励起準位が構築された。加えて、
線角度分布からスピンが特定され、パリティはドップラー幅拡がりの解析によって決定された寿命から推定された。観測されたほとんどの準位は0
か1
軌道に粒子を持つWBP-aとSDPF-NR相互作用を使ったシェルモデル計算によって理解された。2つの計算は約200keVの範囲でよく一致した。しかし、高エネルギー準位の2つはstretched 



準位であるかもしれないが、計算はそれらのエネルギーを2から3MeVオーバーしている。さらに新しく観測された長寿命7919-keVは今のところ説明ができない。
The available experimental information on
P has been greatly increased through the analysis of
decays in coincidence with protons from the interaction of an
O beam at 24 MeV with an
O target. Light charged particles from the reaction were detected with Microball, and multiple
ray coincidences with Gammasphere. Many newly observed
transitions have been identified and placed in the level scheme. Additionally, for most states, spins have been assigned based on measured
ray angular distributions while parities were inferred from lifetimes determined through Doppler-broadened line-shape analysis. Most of the states observed have been interpreted in terms of shell-model calculations using the WBP-a and SDPF-NR interactions having one particle in the 0
or 1
orbital. The two calculations agree almost equally well with the data resulting in root-mean-square differences of about 200 keV. However, two of a few high-lying states may be associated with stretched 



states, but the calculations over-predict their energies by 2-3 MeV. Furthermore, a newly observed long-lived 7919-keV state is established for which no explanation is available at present.