Small-angle cross sections for /sup 50,52/Cr(/sup 3/He,d)/sup 51,53/Mn at 18 MeV

Journal Article · Mon Jan 01 04:00:00 EST 1979 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.19.42· OSTI ID:6333544

Park, J E; Daehnick, W W; Spisak, M J

The reactions /sup 50,52/Cr(/sup 3/He,d) were investigated at an incident energy of 18 MeV with 12--15 keV resolution. Special emphasis was placed on small-angle measurements of the angular distributions, including theta = 0/sup 0/ in order to study new /sup 51,53/Mn levels and to document deviations from standard distorted wave Born-approximation predictions, which appear to depend on the total-angular momentum transfer j. Absolute differential cross sections were obtained in small angular steps for 0/sup 0/ < or = theta < or = 45/sup 0/ in /sup 51/Mn and 0/sup 0/ < or =theta < or = 30/sup 0/ in /sup 53/Mn using a high-resolution position-sensitive (helix) gas counter and photographic emulsions as detectors. l-transfer assignments and spectroscopic factors were deduced from comparison with distorted-wave Born-approximation calculations for the levels up to 4.52 MeV in /sup 51/Mn and up to 6 MeV excitation in /sup 53/Mn. A number of new l = 0,1 values were assigned in both Mn isotopes on the basis of better small-angle data. For l = 1, systematic differences between known p/sub 1/2/ and p/sub 3/2/ transitions were noted at angles below 10/sup 0/. Distorted-wave Born approximation calculations with familiar spin orbit potentials fail to reproduce these differences.

• Research Organization: Nuclear Physics Laboratory, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
• OSTI ID: 6333544
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 19:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BORN APPROXIMATION
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CHROMIUM 50 TARGET
CHROMIUM 52 TARGET
CROSS SECTIONS
DEUTERONS
DIRECT REACTIONS
DISTRIBUTION
DWBA
ELECTRON CAPTURE RADIOISOTOPES
ENERGY LEVELS
ENERGY RANGE
HELIUM 3 REACTIONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
MANGANESE 51
MANGANESE 53
MANGANESE ISOTOPES
MEV RANGE
MEV RANGE 10-100
MINUTES LIVING RADIOISOTOPES
NUCLEAR EMULSIONS
NUCLEAR REACTIONS
NUCLEI
ODD-EVEN NUCLEI
PARITY
PARTICLE PROPERTIES
RADIOISOTOPES
SPECTROSCOPIC FACTORS
SPIN
STRIPPING
TARGETS
TRANSFER REACTIONS
YEARS LIVING RADIOISOTOPES