Uranium nuclear reactions at 900 MeV/nucleon

Greiner, D.; Crawford, H. L.; Lindstrom, P. J.; Kidd, J.; Olson, D.; Schimmerling, W.; Symons, T. J. M.

doi:10.1103/physrevc.31.416

Cited by 25 publications

(43 citation statements)

References 11 publications

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“…In reactions of 800-900 A-MeV 238U with targets from H to Pb [1] an increase of the 23SU fission cross section was observed for the Pb target which cannot be explained merely by an increase of the geometrical cross section. The authors assumed that the observed effect is a result of the GDR excitation of 238U with successive fission (electromagnetic fission, EMF).…”

Section: Introductionmentioning

confidence: 67%

“…In Fig. 8, the total and the nuclear cross sections measured in our experiment are plotted as a function of energy, and for comparison, we show the total fission cross sections of [1,2,3]. The experimental errors include 1cr from the X 2 analysis and the uncertainties in the beam intensity.…”

Section: Resultsmentioning

confidence: 98%

“…From this comparison we can conclude that, for a given projectile velocity, the parallel-momentum transfer in nuclear reactions with 2~ nuclei leading to fission is similar as the one observed for light ions, including 4He projectiles. The cross sections for the electromagnetic and nuclear fission in the 2~ + 238U reaction, as well as the total fission cross sections are given in Table 3, and for comparison, we also list the data from Greiner et al [1], Schmidt et al [2], and Bernas et al [3]. In Fig.…”

Section: Resultsmentioning

confidence: 99%

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Electromagnetic and nuclear fission of238U in the reaction of 100, 500, and 1000 A�MeV208Pb with238U

Polikanov

Brüchle

Folger

et al. 1994

Z. Physik A - Hadrons and Nuclei

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Abstract. The folding-and azimuthal-angle and velocity distributions for the Z3Su fission fragments have been measured in reactions with 100, 500, and 1000A.MeV 2~ These distributions were used to decompose the fission cross section into its electromagnetic and nuclear components. The fraction of electromagnetic fission was found to be 0.16-t-0.07, 0.48• and 0.60• respectively. The electromagnetic fission cross section as a function of the 2~ nucleus energy is compared with theoretical predictions. The measured fission cross section from nuclear reactions (~ 1.5 b) is approximately constant between 100 and 1000 A.MeV. 25.85.-w; 25.70.-z PACS:

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Section: Introductionmentioning

confidence: 67%

Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

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Electromagnetic and nuclear fission of238U in the reaction of 100, 500, and 1000 A�MeV208Pb with238U

Polikanov

Brüchle

Folger

et al. 1994

Z. Physik A - Hadrons and Nuclei

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“…Inclusive cross sections for producing a fragment of charge Z from a projectile nucleus of charge Z 1 are measured with results presented as a function of ⌬Z = Z − Z 1 . As an example, the gross features of 238 U fragmentation at 900A MeV can be established by simply measuring the energy-deposition of the fragments in a stack of Si detectors [1]. Such measurements also supply data relevant to other fields of research, e.g., cosmic ray propagation and nuclear astrophysics [2].…”

Section: Introductionmentioning

confidence: 99%

Charge-changing interactions of ultrarelativisticPbnuclei

et al. 2004

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Experimental data and theoretical results on charge loss −27ഛ⌬Z ഛ −1, charge pickup ⌬Z = + 1, and total charge-changing cross sections for 158A GeV 82 208 Pb ions on CH 2 , C, Al, Cu, Sn, and Au targets are presented.Calculations based on the revisited abrasion-ablation model for hadronic interaction and the relativistic electromagnetic dissociation (RELDIS) model for electromagnetic interaction describe the data. The decay of excited nuclear systems created in both types of interaction is described by the statistical multifragmentation model (SMM), which includes evaporation, fission, and multifragmentation channels. We show that at very high projectile energy the excitation energy of residual nuclei may be described on average as ϳ40 MeV per removed nucleon, with some increase in this value compared to fragmentation of intermediate energy heavy ions at ϳ1A GeV. The importance of the electromagnetic interaction in production of 80 Hg, 81 Tl, and 83 Bi projectile fragments on heavy targets is shown. A strong increase of nuclear-charge pickup cross sections, forming 83 Bi, is observed in comparison to similar measurements at 10.6A GeV. This process is attributed to the electromagnetic production of a negative pion by an equivalent photon, which is quantitatively described by the RELDIS model.

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“…Extensive data on target dependence of the total reaction as well as charge changing cross sections are available in literature [14,36]. The calculated reaction and charge changing cross sections for the 56 Fe projectile (energy 1.88A GeV) on different stable targets, spanning the entire periodic table are shown in Fig.…”

Section: Target Dependencementioning

confidence: 99%

Microscopic investigations of mass and charge changing cross sections

Bhagwat

Gambhir

2004

Phys. Rev. C

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The mass and the charge changing cross sections recently measured in inverse kinematics are investigated microscopically in the framework of Glauber model using the ground state point proton/neutron densities obtained in the relativistic mean field/relativistic Hartree-Bogoliubov approach. As illustrative examples, explicit results for the nuclei spanning different regions of the periodic table, incident on 12 C, hydrogen, and −CH 2 targets are presented. The present study gives an excellent account of the experiment.

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Uranium nuclear reactions at 900 MeV/nucleon

Cited by 25 publications

References 11 publications

Electromagnetic and nuclear fission of238U in the reaction of 100, 500, and 1000 A�MeV208Pb with238U

Electromagnetic and nuclear fission of238U in the reaction of 100, 500, and 1000 A�MeV208Pb with238U

Charge-changing interactions of ultrarelativisticPbnuclei

Microscopic investigations of mass and charge changing cross sections

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