Inelastic electron scattering from [sup 18]O at backward angles

Journal Article · Sat Apr 01 04:00:00 EST 1995 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.51.1926· OSTI ID:6403123

Sellers, R M; Manley, D M; Niboh, M M; Weerasundara, D S ^[1]; Lindgren, R A; Clausen, B L; Farkhondeh, M; Norum, B E ^[2]; Berman, B L ^[3]

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1. Department of Physics and Center for Nuclear Research, Kent State University, Kent, Ohio 44242 (United States)
2. Institute of Nuclear and Particle Physics and Department of Physics, University of Virginia, Charlottesville, Virginia 22901 (United States)
3. Center for Nuclear Studies and Department of Physics, The George Washington University, Washington, D.C. 20052 (United States)

Discrete states in [sup 18]O up to 25 MeV of excitation were studied by inelastic electron scattering. The measurements were performed at the Bates Linear Accelrator Center at 110[degree] and 140[degree], and at momentum transfers ranging from about 1.2 to 2.5 fm[sup [minus]1]. A number of the states discussed here have not been observed previously. Form-factor measuremetns are presented for eight 4[sup [minus]] candidates and for two 6[sup [minus]] candidates. The strongest 4[sup [minus]] state has [ital T]=2 and was observed at 22.40 MeV. Good [ital T]=2 4[sup [minus]] candidates were found at 18.68 and 20.36 MeV, and good [ital T]=1 4[sup [minus]] candidates were found at 8.52 and 12.99 MeV; the strongest 6[sup [minus]] candidate was found at 14.17 MeV. Form-factor measurements are also presented for several 2[sup [minus]] candidates. The [ital M]2 form factor for the lowest 2[sup [minus]] state at 5.53 MeV is similar in shape to that for the lowest 2[sup [minus]] state in [sup 16]O, but is weaker in strength. Finally, form-factor measurements are presented for several high-lying normal-parity states, including strong excitations at 9.36, 9.71, 11.67, and 17.02 MeV.

• OSTI ID: 6403123
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 51:4; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663110 -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
663120 -- Nuclear Structure Models & Methods-- (1992-)
663420* -- Lepton-Induced Reactions & Scattering-- (1992-)
663520 -- Nuclear Mass Ranges-- A=6-19-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGED-PARTICLE REACTIONS
ELECTRON REACTIONS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
FORM FACTORS
INELASTIC SCATTERING
LEPTON REACTIONS
MEV RANGE
MEV RANGE 10-100
MOMENTUM TRANSFER
NUCLEAR REACTIONS
OXYGEN 18 TARGET
PARITY
PARTICLE PROPERTIES
SCATTERING
TARGETS