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Search for a low-energy resonance in 7He with the 7Li(d, 2He) reaction☆

Ryezayeva, N. and Bäumer, C. and von den Berg, A. M. and Chulkov, L. V. and Frekers, D. and De Frenne, D. and Grewe, E.-W. and Haefner, P. and Jacobs, E. and Johanson, H. and Kalmykov, Y. and Negret, A. and von Neumann-Cosel, P. and Popescu, L. and Rakers, S. and Richter, A. and Schrieder, G. and Shevchenko, A. and Simon, H. and Wörtche, H. J. (2006):
Search for a low-energy resonance in 7He with the 7Li(d, 2He) reaction☆.
In: Physics Letters B, 639 (6), p. 623. ISSN 03702693,
[Article]

Item Type: Article
Erschienen: 2006
Creators: Ryezayeva, N. and Bäumer, C. and von den Berg, A. M. and Chulkov, L. V. and Frekers, D. and De Frenne, D. and Grewe, E.-W. and Haefner, P. and Jacobs, E. and Johanson, H. and Kalmykov, Y. and Negret, A. and von Neumann-Cosel, P. and Popescu, L. and Rakers, S. and Richter, A. and Schrieder, G. and Shevchenko, A. and Simon, H. and Wörtche, H. J.
Title: Search for a low-energy resonance in 7He with the 7Li(d, 2He) reaction☆
Language: English
Journal or Publication Title: Physics Letters B
Journal volume: 639
Number: 6
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: 20 Jun 2011 07:12
Official URL: http://dx.doi.org/10.1016/j.physletb.2006.06.081
Identification Number: doi:10.1016/j.physletb.2006.06.081
Alternative Abstract:
Alternative abstract Language

A search for the J[pi]=1/2- spin-orbit partner of the J[pi]=3/2- ground state in 7He has been performed with the charge-exchange reaction. The experimental results are incompatible with recent claims of such a state at very low excitation energy [M. Meister, et al., Phys. Rev. Lett. 88 (2002) 102501]. A decomposition of the spectrum is performed taking into account known resonances and quasifree charge-exchange reactions on 7Li as well as on triton and 4He clusters in the 7Li ground state. A possible resonance at an excitation energy with a width is suggested when the quasifree charge-exchange process on 7Li is constrained by a measurement of the reaction. Gamow-Teller strengths for transitions to the lowest states in 7He deduced from the differential cross sections are in remarkable agreement with results from ab initio quantum Monte Carlo calculations.

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