Differential cross section for [ital n]-[ital p] elastic scattering in the angular region 50[degree][lt][theta][sup *][lt]180[degree] at 459 MeV

Journal Article · Fri Jan 01 04:00:00 EST 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.47.36· OSTI ID:6942631

Northcliffe, L C; Jain, M; Evans, M L; Glass, G; Hiebert, J C; Kenefick, R A ^[1]; Bonner, B E; Simmons, J E ^[2]; Bjork, C W; Riley, P J ^[3]

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1. Texas A M University, College Station, Texas 77843 (United States)
2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
3. University of Texas, Austin, Texas 78712 (United States)

The differential cross section for [ital n]-[ital p] elastic scattering at 459 MeV in the c.m. angular region 50[degree][lt][theta][sup *][lt]180[degree] has been measured with high statistical precision and good relative accuracy. The uncertainty in the absolute normalization (based on the simultaneously measured yield of deuterons from the [ital np][r arrow][ital d][pi][sup 0] reaction) was initially estimated to be [similar to]7%. The results agree well with back-angle data obtained independently at LAMPF but less well with results from Saclay and the Princeton-Pennsylvania Accelerator and, except for a normalization difference of 10%, are fairly well represented by a phase-shift fit. The pole-extrapolation method of Chew was used to extract the pion-nucleon coupling constant [ital f][sup 2] from the back-angle portion of the data. The value obtained, [ital f][sup 2]=0.069, is somewhat smaller than the values 0.0735--0.0790 obtained from analyses of pion-nucleon scattering, tending to confirm the need for an upward renormalization of the angular distribution by [similar to]10%.

• DOE Contract Number: AS05-76ER04449; FG05-88ER40399
• OSTI ID: 6942631
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 47:1; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663430* -- Nucleon-Induced Reactions & Scattering-- (1992-)
663510 -- Nuclear Mass Ranges-- A=1-5-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCURACY
BARYON REACTIONS
BARYON-BARYON INTERACTIONS
CHARGED PARTICLES
COUPLING CONSTANTS
CROSS SECTIONS
DEUTERONS
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
ENERGY RANGE
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HYDROGEN 1 TARGET
INTERACTIONS
MEV RANGE
MEV RANGE 100-1000
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PROTON-NEUTRON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
RENORMALIZATION
SCATTERING
TARGETS