Differential cross section for n-p elastic scattering in the angular range 51/sup 0/<180/sup 0/ at 647. 5 MeV
The n-p elastic differential cross section in the angular range 51/sup 0/<180/sup 0/ at 647.5 MeV has been measured with high statistical precision, good relative accuracy, and absolute normalization of 7% estimated accuracy (based on the observed yield of deuterons from np..-->..d..pi../sup 0/). A monoenergetic neutron beam bombarded a liquid hydrogen target, and the protons and deuterons ejected from the target were detected by a multiwire proportional chamber spectrometer which measured their momentum, angle, and mass. The results resolve discrepancies between previous measurements of this observable, and are in reasonable agreement with Saclay data at large angles, and with a phase shift fit. Evidence for accuracy of the shape of the angular distribution is provided by the good value obtained for the pion-nucleon coupling constant (f/sup 2/ = 0.0759 +- 0.0030) when the pole-extrapolation method of Chew is used to extract f/sup 2/ from this shape.
- Research Organization:
- Texas A and M University, College Station, Texas 77843
- OSTI ID:
- 6790600
- Journal Information:
- Phys. Rev. C; (United States), Vol. 26:6
- Country of Publication:
- United States
- Language:
- English
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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
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Related Subjects
PROTON-NEUTRON INTERACTIONS
ELASTIC SCATTERING
ANGULAR DISTRIBUTION
DIFFERENTIAL CROSS SECTIONS
EXPERIMENTAL DATA
MEV RANGE 100-1000
MULTIWIRE PROPORTIONAL CHAMBERS
PHASE SHIFT
BARYON-BARYON INTERACTIONS
CROSS SECTIONS
DATA
DISTRIBUTION
ENERGY RANGE
HADRON-HADRON INTERACTIONS
INFORMATION
INTERACTIONS
MEASURING INSTRUMENTS
MEV RANGE
NUCLEON-NUCLEON INTERACTIONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PROPORTIONAL COUNTERS
PROTON-NUCLEON INTERACTIONS
RADIATION DETECTORS
SCATTERING
651225* - Nuclear Properties & Reactions
A=1-5
Experimental- Nuclear Reactions & Scattering- (-1987)