One- and two-proton inclusive spectra in 800 MeV proton-nucleus collisions and the mean free path of protons in nuclei

Tanihata, I.; Nagamiya, S.; Schnetzer, S.; Steiner, H.

doi:10.1016/0370-2693(81)90757-7

Cited by 45 publications

(7 citation statements)

References 10 publications

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“…Despite the approximations used for this estimate, this result is remarkably close to the mean-free path of high-energy protons in 12 C, λ 2.4 fm, deduced in Ref. [107].…”

Section: Cross Sectionssupporting

confidence: 87%

Quasifree (p,2p) and (p,pn)

2013

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We study (p,2p) and (p,pn) reactions at proton energies in the range of 100 MeV-1 GeV. Our purpose is to explore the most sensitive observables in unpolarized reactions with inverse kinematics involving radioactive nuclei. We formulate a model based on the eikonal theory to describe total cross sections and momentum distributions of the recoiled residual nucleus. The model is similar to the one adopted for knockout reactions with heavy ions. We show that momentum distributions are sensitive to the angular momentum of the ejected nucleon which can be used as an spectroscopic tool. The total cross sections are sensitive to the nucleon separation energies and to multiple scattering effects. Our calculations also indicate that a beam energy around 500 MeV/nucleon has a smaller dependence on the anisotropy of the nucleon-nucleon elastic scattering.

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“…Despite the approximations used for this estimate, this result is remarkably close to the mean-free path of high-energy protons in 12 C, λ 2.4 fm, deduced in Ref. [107].…”

Section: Cross Sectionssupporting

confidence: 87%

Quasifree (p,2p) and (p,pn)

2013

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“…The momentum position of the maximal 2p-coincidence cross section in 12 C(p,2p) at 800 MeV is now lowered by ∼100 MeV/c and agrees with experimental data [29]. This is indicative of a better kinematics of collisions at the surface.…”

Section: Improvements Of Incl4supporting

confidence: 76%

Progress in high-energy models and impact for applications

Boudard

2007

Nd2007

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“…8 we show two different experimental data for Θ = 15 • , which differ only in the QEP region. This difference is claimed to be due to the resolution of the experimental apparatus [42]. We scale the OSMC calculation to reproduce the momentum region p ′ =600-800 MeV at Θ = 15 • .…”

Section: A One-step Monte Carlo Calculationsmentioning

confidence: 99%

Δ degrees of freedom in antisymmetrized molecular dynamics and (p,p′) reactions in the Δ region

et al. 1995

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Delta degrees of freedom are introduced into antisymmetrized molecular dynamics (AMD). This is done by increasing the number of basic states in the AMD wave function, introducing a Skyrme-type delta-nucleon potential, and including N N ↔ N ∆ reactions in the collision description. As a test of the delta dynamics, the extended AMD is applied to (p,p ′ ) recations at E lab = 800 MeV for a 12 C target. It is found that the ratio and the absolute values for delta peak and quasielastic peak (QEP) in the 12 C(p,p ′ ) reaction are reproduced for angles Θ lab > ∼ 40 • , pointing to a correct treatment of the delta dynamics in the extended AMD. For forward angles the QEP is overestimated, but in generally the agreement between AMD calculations and experimental data is good. The results of the AMD calculations are compared to one-step Monte Carlo (OSMC) calculations and a detailed analysis of multi-step and delta potential effects is given. Along this analysis a decompostion of the cross section into various reaction channels is presented and the reaction dynamics is discussed in detail. As important side results we present a way to apply a Gallilei invariant theory for (N,N ′ ) reactions up to E lab ≈ 800 MeV which ensures approximate Lorentz invariance and we discuss how to fix the width parameter ν of the single particle momentum distribution for outgoing nucleons in the AMD calculation.

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One- and two-proton inclusive spectra in 800 MeV proton-nucleus collisions and the mean free path of protons in nuclei

Cited by 45 publications

References 10 publications

Quasifree (p,2p) and (p,pn)

Quasifree (p,2p) and (p,pn)

Progress in high-energy models and impact for applications

Δ degrees of freedom in antisymmetrized molecular dynamics and (p,p′) reactions in the Δ region

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