TY - JOUR
T1 - Unexpectedly enhanced α -particle preformation in Ti 48 probed by the (p,pα) reaction
AU - Taniguchi, Yasutaka
AU - Yoshida, Kazuki
AU - Chiba, Yohei
AU - Kanada-En'yo, Yoshiko
AU - Kimura, Masaaki
AU - Ogata, Kazuyuki
N1 - Funding Information:
This work was supported by the COREnet program of the RCNP, Osaka University, Hattori Hokokai Foundation Grant-in-Aid for Technological and Engineering Research, and JSPS KAKENHI (Grants No. JP16K05352, No. JP18H05407, No. JP18K03617, and No. JP20K14475). Numerical calculations were performed using the Oakforest-PACS at the Center for Computational Sciences, University of Tsukuba, and XC40 at the Yukawa Institute for Theoretical Physics, Kyoto University.
Funding Information:
Acknowledgments. This work was supported by the COREnet program of the RCNP, Osaka University, Hattori Hokokai Foundation Grant-in-Aid for Technological and Engineering Research, and JSPS KAKENHI (Grants No. JP16K05352, No. JP18H05407, No. JP18K03617, and No. JP20K14475). Numerical calculations were performed using the Oakforest-PACS at the Center for Computational Sciences, University of Tsukuba, and XC40 at the Yukawa Institute for Theoretical Physics, Kyoto University.
Publisher Copyright:
©2021 American Physical Society.
PY - 2021/3
Y1 - 2021/3
N2 - The formation of α particles on nuclear surfaces has remained a fundamental problem since the dawn of nuclear physics. This α-particle formation strongly affects the α-decay lifetimes of heavy and superheavy elements, level scheme of light nuclei, and synthesis of elements in stars. However, despite its importance, the α-particle formation in medium-mass nuclei is seldom investigated. Based on the Ti48(p,pα)Ca44 reaction analysis, this study reports that α-particle formation in the medium-mass Ti48 nucleus is pronounced more compared to that expected through mean-field approximations. Moreover, the estimated average distance between the α particle and residue equals approximately 4.5 fm. This result poses a challenge to describe the four nucleon correlations using microscopic nuclear models.
AB - The formation of α particles on nuclear surfaces has remained a fundamental problem since the dawn of nuclear physics. This α-particle formation strongly affects the α-decay lifetimes of heavy and superheavy elements, level scheme of light nuclei, and synthesis of elements in stars. However, despite its importance, the α-particle formation in medium-mass nuclei is seldom investigated. Based on the Ti48(p,pα)Ca44 reaction analysis, this study reports that α-particle formation in the medium-mass Ti48 nucleus is pronounced more compared to that expected through mean-field approximations. Moreover, the estimated average distance between the α particle and residue equals approximately 4.5 fm. This result poses a challenge to describe the four nucleon correlations using microscopic nuclear models.
UR - http://www.scopus.com/inward/record.url?scp=85104233537&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85104233537&partnerID=8YFLogxK
U2 - 10.1103/PhysRevC.103.L031305
DO - 10.1103/PhysRevC.103.L031305
M3 - Article
AN - SCOPUS:85104233537
VL - 103
JO - Physical Review C
JF - Physical Review C
SN - 2469-9985
IS - 3
M1 - L031305
ER -