Back to Search
Start Over
Soft Dipole Mode in $^{8}$He
- Source :
- Physics of Particles and Nuclei Letters, Physics of Particles and Nuclei Letters, 2009, 6, pp.118-125. ⟨10.1134/S1547477109020046⟩
- Publication Year :
- 2009
- Publisher :
- HAL CCSD, 2009.
-
Abstract
- The low-lying spectrum of 8 He was studied in the 3 H( 6 He, p ) 8 He transfer reaction for small center of mass angles. The 0 + ground state (g.s.) of 8 He and excited states, 2 + at 3.6–3.9 MeV and (1 + ) at 5.3–5.5 MeV, were populated with cross sections of 200, 100–250, and 90–125 μ b/sr. Some evidence for the excited state at about 7.5 MeV can be found in the data. The possible nature of the near-threshold anomaly above 2.14 MeV in 8 He is related to the population of a 1 – continuum (soft dipole excitation) with a peak energy value at about 3 MeV. This assumption can probably resolve the problem of a large uncertainty existing in the experimental data on the 8 He 2 + state energy.
- Subjects :
- Physics
Nuclear and High Energy Physics
education.field_of_study
Radiation
25.60.Je
21.60.Gx
Population
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Atomic and Molecular Physics, and Optics
Dipole excitation
Dipole mode
Excited state
Radiology, Nuclear Medicine and imaging
Atomic physics
Ground state
education
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Physics of Particles and Nuclei Letters, Physics of Particles and Nuclei Letters, 2009, 6, pp.118-125. ⟨10.1134/S1547477109020046⟩
- Accession number :
- edsair.doi.dedup.....eed3178453d47732c9e7edc86530209e