A comparison of the 3He(p, 2p)d and 3He(p, pd)p reactions

doi:10.1016/0375-9474(74)90126-2

Nuclear Physics A

Volume 220, Issue 3, 4 March 1974, Pages 429-437

https://doi.org/10.1016/0375-9474(74)90126-2 Get rights and content

Abstract

The ³He(p, 2p)d and ³He(p, pd)p reactions have been compared at three bombarding energies from 65 to 100 MeV. A comparison of plane wave impulse approximation calculations to the experimental data indicates that multiple scattering effects are large and energy dependent but that they primarily produce a uniform reduction in cross section. Although multiple scattering effects are large the ratio of the cross sections for the two reactions is in agreement with that predicted by the impulse approximation.

References (14)

I. Šlaus
Phys. Rev. Lett.
(1971)
R. Frascaria
P. Kitching
Phys. Rev.
(1972)
R. Wilson
N-N interaction, experimental and phenomenologieal aspects
(1963)
K.M. Watson
Phys. Rev.
(1952)
A.B. Migdal
ZhETF (USSR)
(1955)
JETP (Sov. Phys.)
(1955)
G. Jacob et al.
Rev. Mod. Phys.
(1966)
G. Jacob et al.
Rev. Mod. Phys.
(1973)
H.G. Pugh
Phys. Lett.
(1973)

There are more references available in the full text version of this article.

Cited by (20)

Proton-induced break-up of 3He at 35MeV
1990, Nuclear Physics, Section A
The reactions ³He + p → d + p + p, and ³He + p → p + p + p + n have been studied at 35MeV. These reactions are dominated by quasi-two-body processes: pp and pd quasi-free scattering, pp final-state interactions, and neutron pick-up. We compare our data with phenomenological calculations which describe these processes and establish significant discrepancies. Our data are also compared with four-body calculations based on exact integral equations, which give a much better description and we show that if one would use potentials that yield the correct ³He binding energy and if one would take even approximately into account the Coulomb interaction a much better agreement would be achieved with all the data.
Breakup of 3He by alpha particles at 119.2 MeV
1990, Nuclear Physics, Section A
The ³He breakup reaction has been studied with 119.2 MeV alpha particles at αp and αd quasifree scattering (QFS) conditions. In the coincidence energy spectra, large bumps corresponding to the QFS were observed. A calculation in plane-wave impulse approximation (PWIA) qualitatively reproduces the energy spectra. The ratio of the experimental peak cross sections to the calculated peak cross sections in the PWIA for the αp QFS is 0.1 and the ratio for the αd QFS which has angular dependence ranges about from 0.15 to 0.3.
A calculation taking account of multiple scattering effect reduces the theoretical absolute cross sections considerably and reproduces the angular dependence of the ratio for the αd QFS. The ratio given by this calculation for the αp QFS is 0.4 and the one for the αd QFS is 0.86.
The quasi-free 3He(e, e′p) reaction
1987, Nuclear Physics, Section A
The proton spectral function has experimentally been determined with the ³He(e, e′p) reaction for missing energies, 0<E_m<70MeV, and recoil momenta, 0<P_B<310 MeV/c. Experimental results are obtained for both the two-body, ³He(e, e′p)²H, and three-body breakup processes. Proton momentum density distributions, obtained in a PWIA analysis, are compared with theoretical calculations: Faddeev solutions with the RSC and Paris potentials, and variational calculations with various potentials, including those with a three-nucleon interaction term. Energy-weighted sum rule results are presented and compared with theoretical predictions. The coincidence cross sections are also compared with calculations which include the effects of final state interactions and meson exchange currents. Consistency of the results with PWIA is investigated in the framework of the Chew-Low extrapolation procedure.
Multiple scattering effect for quasifree scattering in the 3He(p, pp)2H reaction at 64.8 MeV
1987, Nuclear Physics, Section A
Search for highly excited states in light nuclei with three-body reactions
1985, Nuclear Physics, Section A
Various three-body break-up reactions resulting from the bombardment of ⁷Li with 120 MeV ³He have been measured simultaneously in a kinematically complete experiment. Missing-mass spectra have been deduced for ⁴H, ⁴He, ⁴Li, ⁵He, ⁵Li, ⁶He, ⁶Li and ⁷Li. The ground states of ⁴H and ⁵He are well described as n-t and n-α P-wave final-state interactions, respectively. Evidence is found for relatively narrow states at very high excitation energies in several nuclei. The results are compared with those of other authors and with various theoretical predictions.
Comparison of the 3He(p,2p)d and 3He(p,pd)p reactions
1984, Physics Letters B
The ³He(p,2p)d reaction has been measured at 300 MeV at the angle pair 70°-33° and at 450 MeV at the angle pairs 70°-30° and 46°-46° for recoil momenta larger than 350 MeV/c. For the ³He(p,pd)p reaction energy sharing loci have been measured at 450 MeV for the angle pairs 25°–68°, and 50°–68°, yielding a recoil momentum range from 0 to 480 MeV/c. The proton-deutern relative motion momentum distributions were deduced in the framework of the PWIA and are compared to existing ³He(e,e′o)d results and to the momentum distribution calculated from the ovelap integral between a Hulthèn deuteron wave function and an Irving-Gunn ³He wave function. Comparisons are also made with spectral function ccalculated using the Faddeev equations and variational techniques.

View all citing articles on Scopus

^☆: Research supported in part by the US Atomic Energy Commission.

^††: Visitor from CSIR, Pretoria, South Africa.

View full text

Article preview

Nuclear Physics A

Abstract

References (14)

Phys. Rev. Lett.

Phys. Rev.

N-N interaction, experimental and phenomenologieal aspects

Phys. Rev.

ZhETF (USSR)

JETP (Sov. Phys.)

Rev. Mod. Phys.

Rev. Mod. Phys.

Phys. Lett.

Cited by (20)

Proton-induced break-up of <sup>3</sup>He at 35MeV

Breakup of <sup>3</sup>He by alpha particles at 119.2 MeV

The quasi-free <sup>3</sup>He(e, e′p) reaction

Multiple scattering effect for quasifree scattering in the <sup>3</sup>He(p, pp)<sup>2</sup>H reaction at 64.8 MeV

Search for highly excited states in light nuclei with three-body reactions

Comparison of the <sup>3</sup>He(p,2p)d and <sup>3</sup>He(p,pd)p reactions

A comparison of the 3He(p, 2p)d and 3He(p, pd)p reactions☆

Abstract

Phys. Rev. Lett.

Phys. Rev.

Phys. Rev.

ZhETF (USSR)

JETP (Sov. Phys.)

Rev. Mod. Phys.

Rev. Mod. Phys.

Phys. Lett.

A comparison of the ³He(p, 2p)d and ³He(p, pd)p reactions☆