Two-deuteron radiative capture: Polarization observables at E sub d le 15 MeV

Journal Article · Mon Oct 01 00:00:00 EDT 1990 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.42.1214· OSTI ID:6159869

Langenbrunner, J L; Weller, H R ^[1]; Tilley, D R ^[2]

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1. Duke University, Durham, NC (USA) Triangle Universities Nuclear Laboratory, Duke Station, Durham, NC (USA)
2. North Carolina State University, Raleigh, NC (USA) Triangle Universities Nuclear Laboratory, Duke Station, Durham, NC (USA)

Measurements of the {sup 2}H({ital {rvec d}},{gamma}){sup 4}He cross section {sigma}({theta}), the vector analyzing power {ital A}{sub {ital y}}({theta}), and the tensor analyzing power {ital A}{sub {ital y}{ital y}}({theta}) have been obtained at {ital E}{sub {ital d}}(lab)=14.7 and 1.2 MeV and {ital E}{sub {ital d}}(lab){le}0.8 MeV; the spherical tensor analyzing power {ital T}{sub 20}({theta}) was also measured at {ital E}{sub {ital d}}(lab)=14.7 MeV. {ital A}{sub {ital y}}(130{degree}) and {ital A}{sub {ital y}{ital y}}(130{degree}) were measured at eight bombarding energies between {ital E}{sub {ital d}}(lab)=0.8 and 14.7 MeV and {ital T}{sub 20}(130{degree}) at ten energies between {ital E}{sub {ital d}}(lab)=5.4 and 14.7 MeV. A transition-matrix element analysis is performed by fitting to the available angular distribution data at {ital E}{sub {ital d}}(lab){le}0.8 MeV and at {ital E}{sub {ital d}}(lab)=1.2 and 14.7 MeV. The data are compared to the results of a multichannel resonating group model (MCRGM) calculation. The MCRGM model includes the tensor force in calculating both the continuum and bound states and provides a fairly good description of the data, especially above {ital E}{sub {ital d}}=5 MeV. This calculation predicts a {ital D}-state probability in {sup 4}He arising from the relative motion between the two deuterons of {ital P}{sub {ital D}}=2.2%.

• DOE Contract Number: AC05-76ER01067; FG05-88ER40441
• OSTI ID: 6159869
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Journal Name: Physical Review, C (Nuclear Physics); (USA) Vol. 42:4; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651220* -- Nuclear Properties & Reactions
A=1-5
Experimental
653001 -- Nuclear Theory-- Nuclear Structure
Moments
Spin
& Models
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ANALYZING POWER
BEAMS
BOUND STATE
CAPTURE
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
D STATES
DEUTERIUM TARGET
DEUTERON REACTIONS
ELECTROSTATIC ACCELERATORS
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
HELIUM 4
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
MATRIX ELEMENTS
MEV RANGE
MEV RANGE 01-10
MEV RANGE 10-100
NUCLEAR REACTIONS
NUCLEI
POLARIZED BEAMS
RESONATING-GROUP METHOD
STABLE ISOTOPES
TARGETS
TENSOR FORCES
VAN DE GRAAFF ACCELERATORS
VARIATIONAL METHODS