Giant resonance region of $sup 15$N studied by polarized and unpolarized proton capture measurements
Journal Article
·
· Phys. Rev., C, v. 13, no. 3, pp. 922-932
OSTI ID:4014143
The cross sections and the analyzing powers have been measured for the $sup 14$C(p, $gamma$$)$$sup 15$N reaction for proton energies from 4.0 to 16.2 MeV. The corresponding range in excitation energies, 13.94 to 25.33 MeV, covers the region of the giant dipole resonance in $sup 15$N. The five angular distributions measured with unpolarized and with polarized beams at eight energies over this region were analyzed to determine the magnitudes and relative phases of the transition matrix elements. The analysis included E1, M1, and E2 transitions. The observed E1 strength exhausts only about 5% of the classical dipole sum rule. The dominant E1 strength is compared to a shell-model calculation which includes 3p-3h excitations. A fairly uniform distribution of E2 strength is observed which exhausts about 7% of the total energy-weighted sum rule. Although large uncertainties on this result could allow the existence of a giant E2 resonance, the most probable values indicate that no appreciable concentration of E2 strength is observed. (AIP)
- Research Organization:
- University of Florida
- NSA Number:
- NSA-33-031696
- OSTI ID:
- 4014143
- Journal Information:
- Phys. Rev., C, v. 13, no. 3, pp. 922-932, Journal Name: Phys. Rev., C, v. 13, no. 3, pp. 922-932; ISSN PRVCA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Giant resonances and bound collective states observed in the scattering of 92. 5-MeV electrons from the closed-neutron-shell nucleus /sup 89/Y between excitation energies from 2. 0 to 55 MeV
Giant electric resonances in /sup 58/Ni studied by alpha particle capture
E1 and E2 strength in /sup 32/S and /sup 34/S observed in. cap alpha. -capture reactions
Journal Article
·
Thu Sep 01 00:00:00 EDT 1977
· Phys. Rev., C; (United States)
·
OSTI ID:7082103
Giant electric resonances in /sup 58/Ni studied by alpha particle capture
Journal Article
·
Sat Dec 31 23:00:00 EST 1977
· Phys. Rev., C; (United States)
·
OSTI ID:5038682
E1 and E2 strength in /sup 32/S and /sup 34/S observed in. cap alpha. -capture reactions
Journal Article
·
Sun Jul 01 00:00:00 EDT 1979
· Phys. Rev., C; (United States)
·
OSTI ID:6212236
Related Subjects
*CARBON 12 TARGET-- PROTON REACTIONS
*CARBON 14-- PROTON REACTIONS
*NITROGEN 15-- GIANT RESONANCE
642005*
CROSS SECTIONS
GAMMA RADIATION
MEV RANGE 01-10
N68331 --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
6 <= A <= 19--Energy Levels & Transitions
N68351* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
6 <= A <= 19--Nuclear Reactions & Scattering
SHELL MODELS
*CARBON 14-- PROTON REACTIONS
*NITROGEN 15-- GIANT RESONANCE
642005*
CROSS SECTIONS
GAMMA RADIATION
MEV RANGE 01-10
N68331 --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
6 <= A <= 19--Energy Levels & Transitions
N68351* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
6 <= A <= 19--Nuclear Reactions & Scattering
SHELL MODELS