Observation of an Excited State in H7e with Unusual Structure

A. A. Korsheninnikov, M. S. Golovkov, A. Ozawa, E. A. Kuzmin, E. Yu. Nikolskii, K. Yoshida, B. G. Novatskii, A. A. Ogloblin, I. Tanihata, Z. Fulop, K. Kusaka, K. Morimoto, H. Otsu, H. Petrascu, and F. Tokanai
Phys. Rev. Lett. 82, 3581 – Published 3 May 1999
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Abstract

The transfer reaction p(8He,d)7He has been studied by correlational measurements, and an excited state of 7He was observed ( E*=2.9±0.3MeV, Γ=2.2±0.3MeV) which decays mainly into 3n+4He. Most likely, it has a structure with a neutron in an excited state coupled to the 6He core which itself is in the excited 2+ state.

  • Received 15 December 1998

DOI:https://doi.org/10.1103/PhysRevLett.82.3581

©1999 American Physical Society

Authors & Affiliations

A. A. Korsheninnikov1,*, M. S. Golovkov1,†, A. Ozawa1, E. A. Kuzmin2, E. Yu. Nikolskii2, K. Yoshida1, B. G. Novatskii2, A. A. Ogloblin2, I. Tanihata1, Z. Fulop1,‡, K. Kusaka1, K. Morimoto1, H. Otsu1, H. Petrascu1, and F. Tokanai1

  • 1RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
  • 2The Kurchatov Institute, Kurchatov sq. 1, 123 182 Moscow, Russia

  • *On leave from Kurchatov Institute, Moscow, Russia.
  • On leave from ATOMKI, Debrecen, Hungary.

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Vol. 82, Iss. 18 — 3 May 1999

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