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Šlaus, I.; Allas, R.G.; Beach, L.A.; Bondelid, R.O.; Petersen, E.L.; Lambert, J.M.; Shannon, D.L.

doi:10.1103/physrevc.8.444

Cited by 14 publications

(4 citation statements)

References 15 publications

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“…For this reason in Figs Fig. It is known [7] that this choice of the n-d wave function gives the same results as those obtained by using the Irving-Gunn wave function for 3H and calculating its overlap with the deuteron Hulth6n wave function. Experimental correlation spectrum for the 3H+2H~d + d + n reaction, at E(3H) = 35.5 MeV and 01/02 = 20o/20 ~ The triple differential cross section divided by the factor PSF, proportional to the phase space factor, is plotted versus the curvilinear abscissa S, measured along the locus.…”

Section: Resultssupporting

confidence: 58%

“…The phase space factor is changing along the locus, in some cases by a factor 7 between different parts of the locus. The arrow marks the position of the minimum spectator momentum for the QFR process The neutron-proton and neutron-deuteron wave functions of ZH and 3H were assumed to be e-gr e-br u(r) 1" with g = 0.4478 fm-1 and b = 1.202 fm-1 for 3H [7], and g=0.2317fm -1 and b=l.202fm -1 for 2H [9]. 1.…”

Section: Resultsmentioning

confidence: 99%

“…Previous investigation of the aH+ 3H QF processes was reported by Slaus et al at E(2H)= 35 MeV in [7], where evidence was found for different quasifree reaction mechanisms. In the case of d-d coincidences, data were reported for the QFS process only.…”

Section: Introductionmentioning

confidence: 91%

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Quasifree processes in the3H+2H→d+d+n reaction

Blagus

Blyth

Calvi

et al. 1990

Z. Physik A - Atomic Nuclei

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Section: Resultssupporting

confidence: 58%

Section: Resultsmentioning

confidence: 99%

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Quasifree processes in the3H+2H→d+d+n reaction

Blagus

Blyth

Calvi

et al. 1990

Z. Physik A - Atomic Nuclei

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“…1 " 5 In the analysis of data, 2 " 3 ' 5 it appears that the plane-wave impulse approximation (PWIA) and the cluster-model approximation applied to such quasifree knockout reactions, A(a,ab)B, can be quite successful in predicting the general shape of the coincidence cross section. However, it has been found in each QFS where the cluster probability is well known, as in reactions involving Is-shell nuclei, that the PWIA curve is a little too broad, and a normalization factor is required to derive absolute fits to the data.…”

mentioning

confidence: 99%

Absolute Cross Sections inH2- andHe
Lim¹
1973
Phys. Rev. Lett.
5
0
0
0
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Quasifree scattering (QFS) in multiparticle reactions has been the subject of recent detailed study, both experimentally and theoretically. 1 " 5 In the analysis of data, 2 " 3 ' 5 it appears that the plane-wave impulse approximation (PWIA) and the cluster-model approximation applied to such quasifree knockout reactions, A(a,ab)B, can be quite successful in predicting the general shape of the coincidence cross section. However, it has been found in each QFS where the cluster probability is well known, as in reactions involving Is-shell nuclei, that the PWIA curve is a little too broad, and a normalization factor is required to derive absolute fits to the data. It has also been determined that this factor is energy dependent. 1 ' 3In the absence of a rigorous theory, similar to the Faddeev theory in three-particle problems, considerable theoretical interest has centered on removing, or deriving from some suitable model, this normalization factor, thus resuscitating PWIA as a viable instrument for QFS analysis. For example, Duck, Valkovic, and Phillips 2 utilize a large phenomenological off-shell correction to produce absolute magnitude and shape fits to the coincidence cross section of coplanar 2 H(d,dp)n at 12.5 MeV. Also, Bonbright et al. 4 have shown that a smooth cutoff parameter Phys. Rev. B(to be published).in the Hulthen deuteron function, which varies with energy, is able to fulfill the same purpose.In this work, I show that such deficiencies in PWIA analyses of recently studied 2 H-and 3 Heinduced QFS processes can be removed by the use of Eckart cluster-model wave functions for the light nuclei 6 and a simple, but physically plausible, modification of the Rogers-Say lor attenuation model. 7 In the original model, the theoretical expression for the coincidence cross section to be compared with experiment is the usual PWIA expression multiplied by an attenuation factor. This factor is defined, for example, in (p, 2/>) QFS as T(a T )= f ip*(r) exp(-o T /4Tir 2 )ip(r)d 3 r,where ip is the cluster function representing the relative function of either final-state proton with respect to the spectator nucleus, while cr r is the sum of experimental total cross sections of both protons on the spectator at the corresponding final-state energies. Physically, T represents the probability of transmission of the two protons after QFS into detectors located at the QFS kinematic region. Haracz and Lim 8 have shown that in symmetric, coplanar (p,2p) reactions on 2 H, 3 He, and 4 He, Eckart wave functions and this attenuation factor can lead to excellent shape andThe absolute magnitudes and shapes of the cross sections of a number of 2 H-and 3 Heinduced quasifree scattering processes are correctly predicted by the use of Eckart cluster-model wave functions for the light nuclei involved and a simple, but physically plausible, modification of the Rogers-Saylor attenuation model. 1258

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