Published March 1988
| Version v1
Journal article
Isovector giant quadrupole resonance in 63Cu
Description
The decay of the isovector E2 giant resonance in 63Cu has been studied by measuring the (e,2n) cross section, in the incident electron energy range 22-45 MeV. The photodisintegration induced by bremsstrahlung was also measured. The electrodisintegration results have been analyzed using the distorted wave Born approximation E1 and E2 virtual photon spectra to obtain these multipole components in the corresponding (γ,2n) cross section. It is found that the isovector E2 giant resonance decays dominantly by two-neutron emission in 63Cu. This decay channel exhausts 65 percent of the energy weighted E2 sum. (author0
Abstract (Portuguese)
O decaimento da ressonancia gigante isovetorial de quadrupolo eletrico no 63Cu foi estudado atraves da medida da seccao de choque (γ,2n), usando-se eletrons de energia 22-45 MeV. A fotodesintegracao induzida por bremsstrahlung foi tambem medida. Os resultados da eletrodesintegracao foram analisados usando-se os espectros de fotons virtuais E1 e E2 calculados na aproximacao de Born de ondas distorcidas, a fim de se obter a composicao multipolar de processo (γ,2n) correspondente. Obtemos que a ressonancia gigante isovetorial E2 decai dominantemente pela emissao de dois neutrons. Esse canal de decaimento esgota 65 por cento da correspondente regra da soma ponderada em energia. (autor)Additional details
Publishing Information
- Journal Title
- Rev. Bras. Fis.
- Journal Volume
- 18
- Journal Issue
- 1
- Series
- Rev. Bras. Fis.
- Journal Page Range
- 47-57
- ISSN
- 0374-4922
- CODEN
- RBFSA
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 19103435
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- COPPER 63 TARGET; DWBA; ELECTRON REACTIONS; ENERGY SPECTRA; EXCITATION; E2-TRANSITIONS; GIANT RESONANCE; MEV RANGE 10-100; PHOTONUCLEAR REACTIONS; TOTAL CROSS SECTIONS
- Descriptors DEC
- BORN APPROXIMATION; CROSS SECTIONS; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; LEPTON REACTIONS; MEV RANGE; MULTIPOLE TRANSITIONS; NUCLEAR REACTIONS; RESONANCE; SPECTRA; TARGETS