Low-lying isovector 2(+) valence-shell excitations of Po-212

Kocheva D.; Rainovski G.; Jolie J.; Pietralla N.; Stahl C.; Petkov P.; Blazhev A.; Hennig A.; Astier A.; Braunroth Th; Cortes M. L.; Dewald A.; Djongolov M.; Fransen C.; Gladnishki K.; Karayonchev V.; Litzinger J.; Mueller-Gatermann C.; Scheck M.; Scholz Ph.; Stegmann R.; Thoele P.; Werner V.; Witt W.; Woelk D.; Van Isacker P.

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Low-lying isovector 2(+) valence-shell excitations of Po-212

机译：低洼的等管2（+）价壳 - 壳牌激发PO-212

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We present the results from an experiment dedicated to search for quadrupole-collective isovector valence-shell excitations, states with so-called mixed proton-neutron symmetry (MSS), of Po-212. This nucleus was studied in an a-transfer reaction. The lifetimes of two short-lived excited states, candidates for the one-phonon MSS, were determined by utilizing the Doppler shift attenuation method. The experimental results are in qualitative agreement with a simple single-j shell model calculation, which, together with the observed lack of quadrupole collectivity, indicates that the isovector nature of low-lying states is a property of the leading single-particle valence shell configuration.

机译：我们介绍了专用于寻找四极集集合等离子的价值 - 壳激发的实验结果，具有PO-212所谓的混合质子 - 中子对称（MS）的状态。在A转移反应中研究了该核。通过利用多普勒换档衰减方法确定两个短寿命兴奋状态的寿命，用于单声道MS的候选者。实验结果与简单的单次j壳模型计算有定性协议，与观察到的缺乏四极集团的缺乏相同，表明低洼状态的isovector性质是领先的单粒子价壳配置的属性。

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来源
《Physical review, C》 |2016年第1期|共6页
作者
Kocheva D.; Rainovski G.; Jolie J.; Pietralla N.; Stahl C.; Petkov P.; Blazhev A.; Hennig A.; Astier A.; Braunroth Th; Cortes M. L.; Dewald A.; Djongolov M.; Fransen C.; Gladnishki K.; Karayonchev V.; Litzinger J.; Mueller-Gatermann C.; Scheck M.; Scholz Ph.; Stegmann R.; Thoele P.; Werner V.; Witt W.; Woelk D.; Van Isacker P.;
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作者单位

Sofia Univ St Kliment Ohridski Fac Phys Sofia 1164 Bulgaria;

Sofia Univ St Kliment Ohridski Fac Phys Sofia 1164 Bulgaria;

Univ Cologne Inst Kernphys D-50937 Cologne Germany;

Tech Univ Darmstadt Inst Kernphys Petersenstr 30 D-64289 Darmstadt Germany;

Tech Univ Darmstadt Inst Kernphys Petersenstr 30 D-64289 Darmstadt Germany;

Bulgarian Acad Sci Inst Nucl Res &

Nucl Energy BU-1784 Sofia Bulgaria;

Univ Cologne Inst Kernphys D-50937 Cologne Germany;

Univ Cologne Inst Kernphys D-50937 Cologne Germany;

IN2P3 CNRS CSNSM F-91405 Orsay France;

Univ Cologne Inst Kernphys D-50937 Cologne Germany;

Tech Univ Darmstadt Inst Kernphys Petersenstr 30 D-64289 Darmstadt Germany;

Univ Cologne Inst Kernphys D-50937 Cologne Germany;

Sofia Univ St Kliment Ohridski Fac Phys Sofia 1164 Bulgaria;

Univ Cologne Inst Kernphys D-50937 Cologne Germany;

Sofia Univ St Kliment Ohridski Fac Phys Sofia 1164 Bulgaria;

Univ Cologne Inst Kernphys D-50937 Cologne Germany;

Univ Cologne Inst Kernphys D-50937 Cologne Germany;

Univ Cologne Inst Kernphys D-50937 Cologne Germany;

Tech Univ Darmstadt Inst Kernphys Petersenstr 30 D-64289 Darmstadt Germany;

Univ Cologne Inst Kernphys D-50937 Cologne Germany;

Tech Univ Darmstadt Inst Kernphys Petersenstr 30 D-64289 Darmstadt Germany;

Univ Cologne Inst Kernphys D-50937 Cologne Germany;

Tech Univ Darmstadt Inst Kernphys Petersenstr 30 D-64289 Darmstadt Germany;

Tech Univ Darmstadt Inst Kernphys Petersenstr 30 D-64289 Darmstadt Germany;

Univ Cologne Inst Kernphys D-50937 Cologne Germany;

CEA DSM CNRS IN2P3 Grand Accelerateur Natl Ions Lourds F-14076 Caen 5 France;

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正文语种 eng
中图分类原子核物理学、高能物理学;
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1. Low-lying isovector 2(+) valence-shell excitations of Po-212 [J] . Kocheva D., Rainovski G., Jolie J., Physical review, C . 2016,第1期

机译：低洼的等管2（+）价壳 - 壳牌激发PO-212
2. Search for Isovector Valence-Shell Excitations in 140Nd and 142Sm via Coulomb excitation reactions of radioactive ion beams [J] . Ralph Kern, Robert Stegmann, Norbert Pietralla, EPJ Web of Conferences . 2018,第2期

机译：通过放射性离子束的库仑激发反应在 140 Nd和 142 Sm中搜索等矢量价-壳激发
3. Isoscalar and isovector dipole excitations: Nuclear properties from low-lying states and from the isovector giant dipole resonance [J] . Bracco A., Lanza E. G., Tamii A. Progress in Particle and Nuclear Physics . 2019,第期

机译：Isoscalar和Isovector偶极刺激：来自低洼状态的核特性，来自Isovector巨型偶极子共振
4. Vibronically resolved squared form factors of some valence-shell excitations of nitrogen studied by high-resolution inelastic x-ray scattering [C] . Y. G. Peng, X. Kang, X. X. Mei, International Symposium on (e, 2e), Double Photoionization and Related Topics . 2013

机译：通过高分辨率非弹性X射线散射研究的一些价壳激发的带状分辨平方形状因素
5. Low-lying collective excitations in (18)F(g.s.) and (18)F(m) studied via intermediate-energy Coulomb excitation (Fluorine-18). [D] . Zimmerman, James Aaron. 2000

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6. An assessment of low-lying excitation energies and triplet instabilities of organic molecules with an ab initio Bethe-Salpeter equation approach and the Tamm-Dancoff approximation [O] . Tonatiuh Rangel, Samia M. Hamed, Fabien Bruneval, -1

机译：使用从头算起的Bethe-Salpeter方程方法和Tamm-Dancoff近似评估有机分子的低层激发能和三重态不稳定性
7. Low-lying isovector 2+ valence-shell excitations of $^{212}$Po [O] . Kocheva, D., Rainovski, G., Jolie, J., 2016

机译：$ ^ {212} $ Po的低等矢量2+价-壳激发

Low-lying isovector 2(+) valence-shell excitations of Po-212

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