MEASUREMENTS OF THE INTERACTION OF 95-Mev PROTONS WITH He$sup 4$

Journal Article · Mon Dec 01 00:00:00 EST 1958 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.112.1658· OSTI ID:4275301

Selove, W; Teem, J M

Elastic and inelastic scattering and the (p.d) "deuteron pickup" process were studied using a proton beam of about 95 Mev incident on a liquid helium target. The elastic scattering shows a nuclear-Coulomb interference dip at 9 deg , a slight diffraction-type minimum at about 57 deg . and a deep minimum. approximately 10/sup -29/ cm/sup 2/sterad at 135 deg . (All angles and cross sections are in the centerof-mass system.) Inelastic scattering spectra were obtained at laboratory angles of 10 deg , 15 deg , and 30 deg . These spectra are characterized by broad peaks, roughly 10Mev wide, centered around an energy about 6 Mev below the upper kinematical limit for inelastic scattering. Their interpretation is discussed qualitatively both in terms of quasi-elastic nucleon- nucleon scattering and in terms of strong interaction between parts of the dissociated alpha particle in virtual or continuum states. A minimum was observed in the He/sup 4/(p,d)He/sup 3/ differential cross section at about 29 deg . Analysis of the (p,d) data at 95 Mev and 32 Mev in the transparent nucleus'' Born approximation yielded inconsistent results; presumably this inconsistency is due to the failure of the model at the lower energy due to the tightly bound structure of He/sup 4/. (auth)

• Research Organization: Harvard Univ., Cambridge, Mass.
• NSA Number: NSA-13-008155
• OSTI ID: 4275301
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Vol. Vol: 112; Other Information: Orig. Receipt Date: 31-DEC-59
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

PHYSICS AND MATHEMATICS
ALPHA PARTICLES
ANGULAR DISTRIBUTION
BORN APPROXIMATION
CROSS SECTIONS
DEUTERONS
DIFFRACTION
ELASTIC SCATTERING
ENERGY
ENERGY LEVELS
ENERGY RANGE
HELIUM 3
HELIUM 4
INELASTIC SCATTERING
INTERACTIONS
LIQUIDS
MEASURED VALUES
NUCLEAR REACTIONS
NUCLEAR STRUCTURE
NUCLEONS
PERTURBATION THEORY
PICK-UP
PROTON BEAMS
SCATTERING
SPECTRA
TARGETS
TRANSDUCERS