Measurement of the elastic cross section for positive pions on carbon at 142 MeV
Thesis/Dissertation
·
OSTI ID:7221473
A measurement of the elastic cross section dsigma/dOMEGA was made for the reaction ..pi../sup +/ + /sup 12/C yields ..pi../sup +/ + /sup 12/C with 142 MeV pions at ten angles ranging from 35 to 85/sup 0/ in the laboratory. This experiment was done at the Los Alamos Meson Physics Facility. A double focusing magnetic spectrometer observed a cylindrical styrofoam target. The resulting momentum spectra were recorded by an array of nineteen totally depleted surface barrier detectors located at the spectrometers focal plane. The spectra from the styrofoam were composed of peaks representing proton elastic, carbon elastic, carbon inelastic and carbon quasi-elastic channels. A function made of Gaussians representing the two body channels and a distribution representing the quasi-elastic channel was fit to the data using a nonlinear least squares algorithm. The ratio of the carbon elastic to proton elastic cross sections was calculated from the areas of the corresponding Gaussians and then multiplied by the proton elastic cross section of Bugg et al., eliminating several sources of systematic errors such as beam normalization. The differential cross sections were found to have the usual diffraction structure with a forward peak and a minimum near 55/sup 0/. Finally, the carbon elastic cross sections were compared to similar ..pi../sup -/ + /sup 12/C cross sections of Binon et al., using the optical model.
- Research Organization:
- Wyoming Univ., Laramie (USA)
- OSTI ID:
- 7221473
- Country of Publication:
- United States
- Language:
- English
Similar Records
Measurement of the elastic cross section for positive pions on carbon at 142 MeV
Quasi-elastic scattering of 800 MeV protons and the detection of alpha particle and deuteron clusters in nuclei. [Absolute cross sections, momentum spectra, preliminary results]
K/sup +/ and. pi. /sup +/ momentum spectra from 2. 5--3. 1 GeV/c protons on carbon and two-body final-state spectral peaks from (p, K/sup +/) and (p,. pi. /sup +/) reactions
Technical Report
·
Tue Nov 30 23:00:00 EST 1976
·
OSTI ID:7124207
Quasi-elastic scattering of 800 MeV protons and the detection of alpha particle and deuteron clusters in nuclei. [Absolute cross sections, momentum spectra, preliminary results]
Conference
·
Sat Dec 31 23:00:00 EST 1977
· AIP (Am. Inst. Phys.) Conf. Proc.; (United States)
·
OSTI ID:5875756
K/sup +/ and. pi. /sup +/ momentum spectra from 2. 5--3. 1 GeV/c protons on carbon and two-body final-state spectral peaks from (p, K/sup +/) and (p,. pi. /sup +/) reactions
Journal Article
·
Thu Jul 01 00:00:00 EDT 1976
· Phys. Rev., C; (United States)
·
OSTI ID:7189927
Related Subjects
651225* -- Nuclear Properties & Reactions
A=1-5
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CARBON
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DIFFRACTION MODELS
DIRECT REACTIONS
DISTRIBUTION
ELASTIC SCATTERING
ELEMENTS
ENERGY RANGE
ENERGY SPECTRA
ERRORS
FUNCTIONS
GAUSS FUNCTION
HADRON REACTIONS
INELASTIC SCATTERING
LINEAR MOMENTUM
MATHEMATICAL MODELS
MESON REACTIONS
MEV RANGE
MEV RANGE 100-1000
NONLINEAR PROBLEMS
NONMETALS
NUCLEAR REACTIONS
PARTICLE MODELS
PION PLUS REACTIONS
PION REACTIONS
QUASI-ELASTIC SCATTERING
QUASI-FREE REACTIONS
SCATTERING
SPECTRA
A=1-5
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CARBON
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DIFFRACTION MODELS
DIRECT REACTIONS
DISTRIBUTION
ELASTIC SCATTERING
ELEMENTS
ENERGY RANGE
ENERGY SPECTRA
ERRORS
FUNCTIONS
GAUSS FUNCTION
HADRON REACTIONS
INELASTIC SCATTERING
LINEAR MOMENTUM
MATHEMATICAL MODELS
MESON REACTIONS
MEV RANGE
MEV RANGE 100-1000
NONLINEAR PROBLEMS
NONMETALS
NUCLEAR REACTIONS
PARTICLE MODELS
PION PLUS REACTIONS
PION REACTIONS
QUASI-ELASTIC SCATTERING
QUASI-FREE REACTIONS
SCATTERING
SPECTRA