Analyzing power measurements for the d+d-d+p+n breakup reaction at 12MeV

We report the most extensive set of vector iT11 and tensor T20 and T22 analyzing-power for the d=d-d=p=n reaction. Two-particle coincidence data have been measured for six deuteron-proton, three deuteron-neutron and three proton-neutron angle pairs at an incident deuteron energy of 12.0MeV. These da...

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Bibliographic Details
Published in:Physical review. C, Nuclear physics Nuclear physics, 1997-07, Vol.56, number 1 (7-10-1997)
Main Authors: Felsher, P.D., Howell, C.R., Tornow, W., Roberts, M.L., Hanly, J.K., Weisel, G.J, Ohali, M. Al, Walter, R.L., Slaus, I., Lambert, J.M., Treado, P.A., Mertens, G., Fonseca, G., Soldi, A., Vlahovic, B.
Format: Article
Language:English
Subjects:
BREAKUP REACTIONS
CROSS SECTIONS
DEUTERONS
IMPULSE APPROXIMATION
MEV RANGE 10-100
NEUTRONS
NUCLEAR PHYSICS AND RADIATION PHYSICS
NUCLEON-NUCLEON INTERACTIONS
POLARIZATION-ASYMMETRY RATIO
PROTONS
RESCATTERING
SPIN
TARGETS
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Summary:We report the most extensive set of vector iT11 and tensor T20 and T22 analyzing-power for the d=d-d=p=n reaction. Two-particle coincidence data have been measured for six deuteron-proton, three deuteron-neutron and three proton-neutron angle pairs at an incident deuteron energy of 12.0MeV. These data are compared to impulse-approximation calculations that threat the underlying nucleon-deuteron system exactly and include contributions from both target and projectile breakup processes. This model gives a good description of the analyzing-power and relative cross-section data. We show that the inclusion of nucleon-nucleon P interactions considerably improves the agreement with the spin observables. The disagreement between the data and theoretical predictions show the limitations in our model and the importance of the rescattering processes. We suggest that the d+d three-body breakup process will provide useful information on the nucleon-nucleon force when exact calculations become available. [S0556-2813(97)02907-5]
ISSN:0556-2813
1089-490X