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Isovector soft dipole mode in Be-6
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- Fomichev, A. S. (author)
- Joint Institute for Nuclear Research (JINR), Russian Federation
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- Chudoba, V. (author)
- Joint Institute for Nuclear Research (JINR), Russian Federation,Slezska univerzita v Opave
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- Egorova, I. A. (author)
- Joint Institute for Nuclear Research (JINR), Russian Federation
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- (creator_code:org_t)
- Elsevier BV, 2012
- 2012
- English.
- In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. - : Elsevier BV. - 0370-2693. ; 708:1-2, s. 6-13
- Journal article (peer-reviewed)
Abstract
Subject headings
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- By using the H-1(Li-6,Be-6)n charge-exchange reaction, population of continuum states in Be-6 was observed up to E-T = 16 MeV, E-T being the Be-6 energy above its three-body decay threshold. In kinematically complete measurements performed by detecting alpha + p + p coincidences, an E-T spectrum of high statistics was obtained, containing approximately similar to 5 x 10(6) events. The spectrum provides detailed correlation information about the well-known 0(+) ground state of Be-6 at E-T = 1.37 MeV and its 2(+) state at E-T = 3.05 MeV. Moreover, a broad structure extending from 4 to 16 MeV was observed. It contains negative parity states populated by Delta L = 1 angular momentum transfer without other significant contributions. This structure can be interpreted as a novel phenomenon, i.e. the isovector soft dipole mode associated with the Li-6 ground state. The population of this mode in the charge-exchange reaction is a dominant phenomenon for this reaction, being responsible for about 60% of the cross-section obtained in the measured energy range.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Two-proton decay
- resonance
- Hyperspherical
- decays
- neutron-rich nuclei
- charge-exchange scattering
- light-nuclei
- spectra
- Three-body Coulomb problem
- harmonics method
- excitations
- he-6
- isotopes
- Kinematically complete measurements
- Be-6
- halo
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
- Fomichev, A. S.
- Chudoba, V.
- Egorova, I. A.
- Ershov, S. N.
- Golovkov, M. S.
- Gorshkov, A. V.
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- Gorshkov, V. A.
- Grigorenko, L. V ...
- Kaminski, G.
- Krupko, S. A.
- Mukha, I. G.
- Parfenova, Y. L.
- Sidorchuk, S. I.
- Slepnev, R. S.
- Standyło, Ł.
- Stepantsov, S. V ...
- Ter-Akopian, G. ...
- Wolski, R.
- Zhukov, Mikhail, ...
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- About the subject
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- NATURAL SCIENCES
- NATURAL SCIENCES
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- Articles in the publication
- Physics Letters, ...
- By the university
- Chalmers University of Technology
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