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Structure of ⁷He studied with the ⁷Li(d,²He) reaction

Neumann-Cosel, P. von ; Bäumer, C. ; Berg, A. M. van den ; Frekers, D. ; Frenne, D. de ; Grewe, E.-W. ; Haefner, P. ; Jacobs, E. ; Johanson, H. ; Kalmykov, Y. ; Negret, A. ; Popescu, L. ; Rakers, S. ; Richter, A. ; Ryezayeva, N. ; Schrieder, G. ; Shevchenko, A. ; Wörtche, H. J. (2005)
Structure of ⁷He studied with the ⁷Li(d,²He) reaction.
In: Journal of Physics: Conference Series, 20
doi: 10.1088/1742-6596/20/1/037
Article, Bibliographie

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Abstract

A search for the Jπ = 1/2⁻ spin–orbit partner of the Jπ = 3/2⁻ ground state in ⁷He has been performed with the ⁷Li(d,²He) charge-exchange reaction. The results are incompatible with recent claims of such a state at very low excitation energy [Meister M et al 2002 Phys. Rev. Lett. 88 102501] but rather suggest a resonance with parameters Ex = (1.2⁺⁰.⁵₋₀.₄) MeV, Λ = (1.9⁺⁰.⁸₋₀.₄) MeV. GT strengths deduced for the transitions to the lowest states in 7He are in remarkable agreement with ab initio quantum Monte Carlo calculations.

Item Type: Article
Erschienen: 2005
Creators: Neumann-Cosel, P. von ; Bäumer, C. ; Berg, A. M. van den ; Frekers, D. ; Frenne, D. de ; Grewe, E.-W. ; Haefner, P. ; Jacobs, E. ; Johanson, H. ; Kalmykov, Y. ; Negret, A. ; Popescu, L. ; Rakers, S. ; Richter, A. ; Ryezayeva, N. ; Schrieder, G. ; Shevchenko, A. ; Wörtche, H. J.
Type of entry: Bibliographie
Title: Structure of ⁷He studied with the ⁷Li(d,²He) reaction
Language: English
Date: 2005
Place of Publication: Bristol
Publisher: IOP Science
Journal or Publication Title: Journal of Physics: Conference Series
Volume of the journal: 20
DOI: 10.1088/1742-6596/20/1/037
Corresponding Links:
Abstract:

A search for the Jπ = 1/2⁻ spin–orbit partner of the Jπ = 3/2⁻ ground state in ⁷He has been performed with the ⁷Li(d,²He) charge-exchange reaction. The results are incompatible with recent claims of such a state at very low excitation energy [Meister M et al 2002 Phys. Rev. Lett. 88 102501] but rather suggest a resonance with parameters Ex = (1.2⁺⁰.⁵₋₀.₄) MeV, Λ = (1.9⁺⁰.⁸₋₀.₄) MeV. GT strengths deduced for the transitions to the lowest states in 7He are in remarkable agreement with ab initio quantum Monte Carlo calculations.

Identification Number: Artikel-ID: 183
Divisions: DFG-Collaborative Research Centres (incl. Transregio)
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
05 Department of Physics
05 Department of Physics > Institute of Nuclear Physics
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 634: Nuclear Structure, Nuclear Astrophysics and Fundamental Experiments at Low Momentum Transfer at the Superconducting Darmstadt Accelerator (S-DALINAC)
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 634: Nuclear Structure, Nuclear Astrophysics and Fundamental Experiments at Low Momentum Transfer at the Superconducting Darmstadt Accelerator (S-DALINAC) > C: Fundamentale Experimente
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 634: Nuclear Structure, Nuclear Astrophysics and Fundamental Experiments at Low Momentum Transfer at the Superconducting Darmstadt Accelerator (S-DALINAC) > C: Fundamentale Experimente > C2: Elektronstreuung an Wenig-Nukleonen-Systemen
Date Deposited: 04 Apr 2012 14:52
Last Modified: 01 Mar 2024 09:22
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