期刊
PHYSICAL REVIEW LETTERS
卷 109, 期 23, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.232501
关键词
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资金
- Department of Energy National Nuclear Security Administration [DE-NA0000979]
- DOE [DE-FG02-92ER40750]
- National Science Foundation [PHY06-06007, PHY09-22335, PHY09-69058, PHY11-02511]
- Division Of Physics
- Direct For Mathematical & Physical Scien [1205357, 969058, 855456] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [1205537] Funding Source: National Science Foundation
The ground state of He-10 was populated using a 2p2n-removal reaction from a 59 MeV/u Be-14 beam. The decay energy of the three-body system, He-8 + n + n, was measured and a resonance was observed at E = 1.60(25) MeV with a 1.8(4) MeV width. This result is in agreement with previous invariant mass spectroscopy measurements, using the Li-11(-p) reaction, but is inconsistent with recent transfer reaction results. The proposed explanation that the difference, about 500 keV, is due to the effect of the extended halo nature of Li-11 in the one-proton knockout reaction is no longer valid as the present work demonstrates that the discrepancy between the transfer reaction results persists despite using a very different reaction mechanism, Be-14(-2p2n). DOI: 10.1103/PhysRevLett.109.232501
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