Electroexcitation of 4{sup +} states in {sup 18}O

Journal Article · Fri Oct 01 04:00:00 EDT 1993 · Bulletin of the American Physical Society

OSTI ID:387050

Manley, D M; Sellers, R M; Niboh, M M ^[1]

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1. and others

Measurements of electron scattering from {sup 18}O were performed at the MIT-Bates Linear Accelerator Center at 110{degrees} and 140{degrees}, at momentum transfers ranging from about 1.2 to 2.5 fm{sup -1}. Form factors were extracted for 57 discrete states with excitation energies up to about 25 MeV. The lowest 4{sup +} states at 3.55 and 7.12 MeV are excited strongly and their form factors are well determined from prior measurements. The state at 3.65 MeV has a large (1d{sub 5/2})2 2p-0h component while the state at 7.12 MeV has a large 4p-2h component with the we&k-coupling configuration, {sup 20}Ne(4{sup +}){direct_product}{sup 14}C(0{sup +}). New form-factor measurements will be presented for normal-parity states at 8.96 MeV and 11.67 MeV. The state at 8.96 MeV is identified as the 4{sup +} state with a large (1d{sub 5/2})(ld{sub 3/2}) 2p-0h component, and the state at 11.67 MeV is identified as the 4{sup +} state belonging to a K{sup {pi}} = 2{sup +} rotational band having large 4p-2h components and headed by a 2{sup +} state at 9.38 MeV. New measurements for the state at 9.36 MeV will be presented as well.

• OSTI ID: 387050
• Report Number(s): CONF-931044--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 9 Vol. 38; ISSN BAPSA6; ISSN 0003-0503
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ELECTRON REACTIONS
FORM FACTORS
MOMENTUM TRANSFER
NUCLEAR STRUCTURE
OXYGEN 18 TARGET
SCATTERING