Scattering of 1 GeV protons on nuclei

The elastic scattering of the halo nucleus 6 He from a proton target at 717 MeV/nucleon is investigated within three different multiple-scattering formulations of the total transition amplitude. The factorized impulse approximation (FIA) and the fixed scatterer approximation (FSA) of the multiple-scattering expansion are used to evaluate accurately the single-scattering terms and to test the validity of a few-body Glauber approach. The latter also includes terms beyond single scattering and the importance of these terms is investigated. The differential cross section is calculated for proton scattering from 6 He at 717 MeV in inverse kinematics and compared with recent data.

show abstract

“…All parameters are deduced, e.g., Refs. [10,15,18], from fits to free pp-and pn-scattering data. In Fig.…”

Section: Calculations and Resultsmentioning

confidence: 99%

Few-body multiple scattering calculations forHe6on protons

Al-Khalili¹,

Crespo²,

Johnson³

et al. 2007

Phys. Rev. C

View full text Add to dashboard Cite

show abstract

“…(26). Furthermore, it is more convenient to express the integrand of the double rescattering amplitude through the momentum transfers in the NN rescattering amplitude 23 (similar to what was done in Sec.III A), one obtains for the complete double rescattering amplitude:…”

Section: Double Rescattering Amplitudementioning

confidence: 99%

Exclusive electrodisintegration ofHe3at highQ2. I. Generalized eikonal approximation

et al. 2005

View full text Add to dashboard Cite

We develop a theoretical framework for calculation of high Q 2 exclusive electro-disintegration of A = 3 systems. The main result of this work is the calculation of the final state interaction of the struck energetic nucleon with recoil nucleons within the generalized eikonal approximation (GEA) which allows us to account for the finite and relatively large momenta of the bound nucleons in the nucleus. The important advantage of this approach is the possibility to study in a self-consistent way the short range correlations in nuclei. This is due to the fact that GEA does not require a stationary condition for recoil nucleons as conventional Glauber approximation does. As a result GEA treats explicitly the Fermi motion of recoil nucleons in the nucleus.

show abstract

“…For 8 He we use the COSMA wave function for ψ (5) rel which gives a simple expression for ρ 8 (x 1 , . . .…”

Section: Calculations Of Observablesmentioning

confidence: 99%

“…S A also determines the reaction cross section observable. The S j (b j ) = 1 − Γ pj (b j ) specify completely the nucleon-nucleon scattering/dynamics input, have been determined [4,5] from fits to small angle pp and pn scattering data, and are assumed here to be spin-independent. The required nuclear structure input is the target many-body density integrated over spin coordinates ρ A (x 1 , .…”

mentioning

confidence: 99%

Sizes of the He isotopes deduced from proton elastic scattering measurements

Tostevin¹,

Al-Khalili²

1998

Exotic Nuclei and Atomic Masses (ENAM 98)

View full text Add to dashboard Cite

Abstract. Glauber theory provides a microscopic formulation of reactions of composite nuclei at high energies. Two approaches, recently used for the treatment of the proton-He systems, are discussed and contrasted. The observed sensitivity of few-body calculations to the nuclear size and structure inputs used is discussed.It has been demonstrated that reaction calculations which include an explicit treatment of the few-body nature of halo nuclei result in an increased transparency in their high energy collisions with massive targets [1]. The resulting reductions in the calculated cross sections then suggest that larger halo extensions are required to reproduce the already enhanced cross section data. Such an analysis for 6 He+ 12 C is consistent with a 6 He rms matter radius of order 2.5 fm [2]. This is encouraging since three-body models, with physically sensible inputs in each two-body channel, can produce 6 He nuclei which differ appreciably from this size only by over-or under-binding the two halo neutrons.Stimulated by recent data on elastic 6 He and 8 He scattering from protons at 700 MeV/nucleon [3] we consider such few-body calculations of observables in the case of a nucleon target. An understanding of the sensitivity of elastic scattering and reaction cross sections to the assumed projectile structure for a nucleon target is of interest in assessing the spectroscopic value of such data.In Glauber's multiple scattering theory the proton+A elastic amplitude, for incident proton wave number k and momentum transfer q, is the integral over protontarget center of mass (c.m.) impact parameters

show abstract

Scattering of 1 GeV protons on nuclei

Cited by 233 publications

References 141 publications

Few-body multiple scattering calculations forHe6on protons

Few-body multiple scattering calculations forHe6on protons

Exclusive electrodisintegration ofHe3at highQ2. I. Generalized eikonal approximation

Sizes of the He isotopes deduced from proton elastic scattering measurements

Contact Info

Product

Resources

About