Developement of crisp package for spallation reaction studies and its utilization in ADS (Accelerator Driven System)

Anéfalos, S.; Deppman, A.; Arruda‐Neto, J. D. T.; Likhachev, V.P.; Santos, Andrés; Coelho, Paulo; Duarte, S. B.; Tavares, O. A. P.

doi:10.1590/s0103-97332004000500070

Cited by 4 publications

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“…It is important to remark that all parameters in the CRISP code used in the present work have the same values as those used in [20,[23][24][25][26][27]. Therefore, with only one set of parameters, the CRISP model is able reproduce experimental results for a variety of observables in nuclei from carbon to uranium, and at an energy range from 40 MeV up to 3.5 GeV, and for different probes such as photons, electrons, and protons.…”

Section: -3mentioning

confidence: 99%

“…These calculations have shown good agreement with the experimental results. Subsequently, the CRISP model has been applied to proton-nucleus interactions at energies between 200 MeV and 1.2 GeV [23][24][25], and different observables, such as neutron multiplicities and spallation products distributions, have been evaluated, showing again good results as compared to experimental data. With the inclusion of electron scattering, the CRISP approach has been used also for studying the quasifree electrofission cross section on 238 U [26,27].…”

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Photofission and total photoabsorption cross sections in the energy range of shadowing effects

et al. 2006

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The energy dependence of photofission cross section for heavy nuclei has recently been well described in terms of a Monte Carlo calculation at energies from the pion photoproduction threshold up to 1 GeV [see, for instance, A. Deppman et al., Phys. Rev. Lett. 87 (2001) 182701]. Recent experimental data from CLAS (CEBAF Large Angle Spectrometer) collaboration have extended the measured photofission cross section up to 3.5 GeV for actinide and preactinide nuclei. In this work we address the calculation of photoabsorption and photofission cross sections for actinide and preactinide nuclei above 1 GeV, a region where the shadowing effect plays an important role in the nuclear photoabsorption process. DOI: 10.1103/PhysRevC.73.064607 PACS number(s): 25.20.−x, 25.85.Jg, 24.10.Lx, 24.85.+p Photon-nucleus reactions are excellent tools for investigating nuclear and nucleonic structures. The photonuclear absorption process, for instance, has been used to study the formation and propagation of baryonic resonances inside nuclear matter [1-6], the photon hadronization process that gives rise to the shadowing effect in the photoabsorption cross section [1,7], or the formation and propagation of hyperons in the nucleus [6]. The simplicity of photonuclear reactions as compared to reactions induced by other probes, from both the theoretical and experimental points of view, is attractive to those willing to study nuclear and subnuclear structures.However, the various nuclear processes taking place during the reaction, mainly at intermediate and high energies, cause some problems in the comprehension of the nuclear or subnuclear mechanisms. One example is the fissility of heavy nuclei. It was supposed that fissility was an increasing function of the photon energy, and that for actinide nuclei, which present the highest fissility values among the stable nuclei, one could expect their fissility to be 1 for energies above a few hundred MeV [8]. In fact, the measurement of fission cross section was proposed as a reliable method for measuring the total photoabsorption cross section [9,10]. A fine, although incomplete, overview on the theoretical approaches for calculating photofission cross sections is presented in Ref. [11].Experimental results obtained at Frascati [9,10], Mainz [12,13], Bonn [1,14], Saskatoon [15], and Thomas Jefferson Laboratory [16,17] have shown, however, that this was not the case. The fissility for thorium and several uranium isotopes was found to be lower than that for neptunium, showing that nuclear fissility does not saturate for those nuclei, remaining at a value below 100% even at high incident photon energies. This result was fully explained by a Monte Carlo study of the intranuclear cascade and evaporation/fission competition processes that follows the photon absorption, as implemented by the MCMC and MCEF codes [18,19]. The important feature for explaining the nonsaturation of the heavy-nuclei fissility was the inclusion of protons and α-particles evaporation in the evaporation-fission competition proc...

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Photofission and total photoabsorption cross sections in the energy range of shadowing effects

et al. 2006

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“…A lot of good agreements are obtained between experiment and CRISP results for photon-, proton-and electron-induced fission reactions [26,27,28,29,30,31,32,33,34,35,36]. Also there are some applications of CRISP, especially for nuclear reactions, where we apply the model with success to develop new concepts of nuclear reactors [37,38,39,40,41]. Recently, the mechanism of heavy-ion-induced fission has been also added to CRISP model.…”

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confidence: 99%

Efeitos do movimento coletivo na evaporação e fissão nuclear

Shanbehbazari¹

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Physics InstitutePhD student in Sciences Study of heavy-ion-induced fusion-fission reactions is important for understanding the physics of nuclear matter and nuclear models. In this work, we study the mechanism of nuclear reactions of 11 B + 181 T a, 11 B + 197 Au, 11 B + 209 Bi and 7 Li + 208 P b at intermediate energy using CRISP model and also analyze the nuclear reaction processes starting from the initial nucleus-nucleus collision up to the fragments production. The experimental data are measured at the LNR Phasotron (JINR, Dubna, Russia) and also taken from Ref. [1]. The fission process is studied using multimodal fission model for 7 Li + 208 P b

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Heavy-ion-induced fission of $$^{181}$$Ta and $$^{209}$$Bi at intermediate energies by CRISP model

et al. 2020

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Developement of crisp package for spallation reaction studies and its utilization in ADS (Accelerator Driven System)

Cited by 4 publications

References 8 publications

Photofission and total photoabsorption cross sections in the energy range of shadowing effects

Photofission and total photoabsorption cross sections in the energy range of shadowing effects

Efeitos do movimento coletivo na evaporação e fissão nuclear

Heavy-ion-induced fission of $$^{181}$$Ta and $$^{209}$$Bi at intermediate energies by CRISP model

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