Details

Autor(en) / Beteiligte

• Ahn, D S
• Fukuda, N
• Geissel, H
• Inabe, N
• Iwasa, N
• Kubo, T
• Kusaka, K
• Morrissey, D J
• Murai, D
• Nakamura, T
• Ohtake, M
• Otsu, H
• Sato, H
• Sherrill, B M
• Shimizu, Y
• Suzuki, H
• Takeda, H
• Tarasov, O B
• Ueno, H
• Yanagisawa, Y
• Yoshida, K

Titel

Location of the Neutron Dripline at Fluorine and Neon

Ist Teil von

• Physical review letters, 2019-11, Vol.123 (21), p.212501-212501, Article 212501

Ort / Verlag

United States: American Physical Society

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Electronic Journals Library

Beschreibungen/Notizen

• A search for the heaviest isotopes of fluorine, neon, and sodium was conducted by fragmentation of an intense ^{48}Ca beam at 345  MeV/nucleon with a 20-mm-thick beryllium target and identification of isotopes in the large-acceptance separator BigRIPS at the RIKEN Radioactive Isotope Beam Factory. No events were observed for ^{32,33}F, ^{35,36}Ne, and ^{38}Na and only one event for ^{39}Na after extensive running. Comparison with predicted yields excludes the existence of bound states of these unobserved isotopes with high confidence levels. The present work indicates that ^{31}F and ^{34}Ne are the heaviest bound isotopes of fluorine and neon, respectively. The neutron dripline has thus been experimentally confirmed up to neon for the first time since ^{24}O was confirmed to be the dripline nucleus nearly 20 years ago. These data provide new keys to understanding the nuclear stability at extremely neutron-rich conditions.