Quasi-deuteron model and nucleon swelling in photonuclear reactions

Murgia, F.; Quarati, Piero

doi:10.1007/bf02800342

Cited by 3 publications

(9 citation statements)

References 15 publications

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“…As shown in [15], the r.h.s, of [4] can be fitted to the QD cross section given by Lager [16]. This author used an improved version of the old QD model considering only the exchange part of the deuteron photodisintegration cross section and stressing the importance in the QD model of the correlation mechanism of the neutron-proton pair.…”

Section: R(e)=a+b L~ +Ce~mentioning

confidence: 98%

“…II) that is linear in Ee r(E,)=a" +c'E, (15) 111) that is constant (i.e. equal to its average value in the energy interval considered) r(Ey)~<r(Ey)> =a" .…”

Section: The Photofission Of 2~mentioning

confidence: 99%

“…Since we do not yet have a theory for an "a priori" prediction of the value of D, we infer phenomenologically D ~ 60 MeV for heavy nuclei, by comparing the QD cross section containing nucleon swelling to the total photoabsorption experimental results [15] and to the QD model of Laget [16]. The photofission cross section is then given by…”

Section: R(e)=a+b L~ +Ce~mentioning

confidence: 99%

“…Here r is the deuteron photodisintegration cross section containing the nucleon swelling factor [15], which cor-293 rects slightly the cross section at higher incident energies.…”

Section: R(e)=a+b L~ +Ce~mentioning

confidence: 99%

“…Our purpose here is to discuss phenomenologically the photofission of these three nuclei in the QD region, using a modified QD approach previously proposed by us and applied to study photoreactions and the low energy/5 annihilation on two nucleons for different nuclei [ 15].…”

Section: Introductionmentioning

confidence: 99%

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Photofission of209Bi,232Th and238U in the quasi-deuteron energy region

Delsanto

Fubini

Murgia

et al. 1992

Z. Physik A - Hadrons and Nuclei

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Photofission cross sections of 2~ 238U and 232Th are very different, both in magnitude and in their dependence on the incident photon energy. In fact, in the quasideuteron energy region, cry (Bi)< 10-2crf(U), with crf(Yh) having intermediate values. Also crl(Bi) increases monotonically vs. E~, while cri(U) and uj(Th) (above 75 MeV) are approximatively constant. We propose here a parametrization of photofission in the quasi-deuteron region, which fits, up to E~ ,-~m~, the photofission cross sections of these three nuclei. PACS: 25.85.Jg

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Section: R(e)=a+b L~ +Ce~mentioning

confidence: 98%

“…II) that is linear in Ee r(E,)=a" +c'E, (15) 111) that is constant (i.e. equal to its average value in the energy interval considered) r(Ey)~<r(Ey)> =a" .…”

Section: The Photofission Of 2~mentioning

confidence: 99%

Section: R(e)=a+b L~ +Ce~mentioning

confidence: 99%

“…Here r is the deuteron photodisintegration cross section containing the nucleon swelling factor [15], which cor-293 rects slightly the cross section at higher incident energies.…”

Section: R(e)=a+b L~ +Ce~mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Photofission of209Bi,232Th and238U in the quasi-deuteron energy region

Delsanto

Fubini

Murgia

et al. 1992

Z. Physik A - Hadrons and Nuclei

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Global study of nuclear modifications on parton distribution functions

Wang

Chen

2017

Nuclear Physics B

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A global analysis of nuclear medium modifications of parton distributions is presented using deeply inelastic scattering data of various nuclear targets. Two obtained data sets are provided for quark and gluon nuclear modification factors, referred as nIMParton16. One is from the global fit only to the experimental data of isospin-scalar nuclei (Set A), and the other is from the fit to all the measured nuclear data (Set B). The scale-dependence is described by DGLAP equations with nonlinear corrections in this work. The Fermi motion and off-shell effect, nucleon swelling, and parton-parton recombination are taken into account together for modeling the complicated $x$-dependence of nuclear modification. The nuclear gluon shadowing in this paper is dynamically generated by the QCD evolution of parton splitting and recombination processes with zero gluon density at the input scale. Sophisticated nuclear dependence of nuclear medium effects is studied with only two free parameters. With the obtained free parameters from the global analysis, the nuclear modifications of parton distribution functions of unmeasured nuclei can be predicted in our model. Nuclear modification of deuteron is also predicted and shown with recent measurement at JLab.Comment: 12 pages, 9 figures, minor modification

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pn-Pair Avarage Velocity in Statistical Model of Photofission

Lucia¹

1997

Commun. Theor. Phys.

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Quasi-deuteron model and nucleon swelling in photonuclear reactions

Cited by 3 publications

References 15 publications

Photofission of209Bi,232Th and238U in the quasi-deuteron energy region

Photofission of209Bi,232Th and238U in the quasi-deuteron energy region

Global study of nuclear modifications on parton distribution functions

pn-Pair Avarage Velocity in Statistical Model of Photofission

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