Proton Distribution Radii of 16-24O: Signatures of New Shell Closures and Neutron Skin

被引：32

作者：

Kaur, S. ^{[1
,2
]}

Kanungo, R. ^{[1
,3
]}

Horiuchi, W. ^{[4
,5
,6
]}

Hagen, G. ^{[3
,7
,8
]}

Holt, J. D. ^{[3
]}

Hu, B. S. ^{[3
]}

Miyagi, T. ^{[9
,10
]}

Suzuki, T. ^{[11
]}

Ameil, F. ^{[12
]}

Atkinson, J. ^{[1
]}

Ayyad, Y. ^{[13
]}

Bagchi, S. ^{[1
,12
]}

Cortina-Gil, D. ^{[13
]}

Dillmann, I ^{[12
,14
]}

Estrade, A. ^{[1
,12
]}

Evdokimov, A. ^{[12
]}

Farinon, F. ^{[12
]}

Geissel, H. ^{[12
,14
]}

Guastalla, G. ^{[12
]}

Janik, R. ^{[15
]}

Knobel, R. ^{[12
]}

Kurcewicz, J. ^{[12
]}

Litvinov, Yu A. ^{[12
]}

Marta, M. ^{[12
]}

Mostazo, M. ^{[13
]}

Mukha, I ^{[12
]}

Nociforo, C. ^{[12
]}

Ong, H. J. ^{[16
]}

Otsuka, T. ^{[17
,18
]}

Pietri, S. ^{[12
]}

Prochazka, A. ^{[12
]}

Scheidenberger, C. ^{[12
,14
]}

Sitar, B. ^{[15
]}

Strmen, P. ^{[15
]}

Takechi, M. ^{[12
]}

Tanaka, J. ^{[16
]}

Tanihata, I ^{[16
,19
,20
]}

Terashima, S. ^{[19
,20
]}

Vargas, J. ^{[13
]}

Weick, H. ^{[12
]}

Winfield, J. S. ^{[12
]}

机构：

[1] St Marys Univ, Astron & Phys Dept, Halifax, NS B3H 3C3, Canada

[2] Dalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS B3H 4R2, Canada

[3] TRIUMF, Vancouver, BC V6T 4A3, Canada

[4] Osaka Metropolitan Univ, Dept Phys, Osaka 5588585, Japan

[5] Osaka Metropolitan Univ, Nambu Yoichiro Inst Theoret & Expt Phys NITEP, Osaka 5588585, Japan

[6] Hokkaido Univ, Dept Phys, Sapporo, Hokkaido 0600810, Japan

[7] Oak Ridge Natl Lab, Phys Div, POB 2009, Oak Ridge, TN 37831 USA

[8] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

[9] Tech Univ Darmstadt, Dept Phys, D-64289 Darmstadt, Germany

[10] GSI Helmholtzzentrum Schwerionenforsch GmbH, ExtreMe Matter Inst EMMI, D-64291 Darmstadt, Germany

[11] Nihon Univ, Dept Phys, Setagaya Ku, Tokyo 1568550, Japan

[12] GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany

[13] Univ Santiago de Compostela, E-15706 Santiago De Compostella, Spain

[14] Justus Liebig Univ, D-35392 Giessen, Germany

[15] Comenius Univ, Fac Math & Phys, Bratislava 84215, Slovakia

[16] Osaka Univ, RCNP, Osaka 5670047, Japan

[17] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[18] RIKEN, Nishina Ctr, Wako, Saitama 3510198, Japan

[19] Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China

[20] Beihang Univ, IRCNPC, Beijing 100191, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2022年 / 129卷 / 14期

关键词：

CHANGING CROSS-SECTIONS; TOTAL CHARGE; NUCLEI;

D O I：

10.1103/PhysRevLett.129.142502

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The root mean square radii of the proton density distribution in 16-24O derived from measurements of charge changing cross sections with a carbon target at similar to 900A MeV together with the matter radii portray thick neutron skin for 22-24O despite 22,24O being doubly magic. Imprints of the shell closures at N = 14 and 16 are reflected in local minima of their proton radii that provide evidence for the tensor interaction causing them. The radii agree with ab initio calculations employing the chiral NNLOsat interaction, though skin thickness predictions are challenged. Shell model predictions agree well with the data.

引用

页数：6

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