Rb and Cs isotopic distributions from 1 GeV proton fission of 238U

Belyaev, B.N.; Domkin, V. D.; Korobulin, Yu.G.; Androneko, L.N.; Solyakin, G.E.

doi:10.1016/0375-9474(80)90267-5

Cited by 13 publications

(10 citation statements)

References 10 publications

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“…Most fission products have a large range in the target material and thus, unlike in heavy-ion induced fusion evaporation reactions, thick targets can be used to increase the yield of the wanted rare isotopes. In the collision of the highenergy proton beam with a target, spallation, fragmentation and fission can occur [248][249][250][251]. In spallation reactions, a large numbers of protons, neutrons and α particles are ablated from the target nucleus, for example 238 U. Spallation products are typically neutron deficient while fission gives access to neutron-rich nuclei.…”

Section: Isotope Separation On-line (Isol) Techniquesmentioning

confidence: 99%

Nuclear astrophysics with radioactive beams

2010

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a b s t r a c tThe quest to comprehend how nuclear processes influence astrophysical phenomena is driving experimental and theoretical research programs worldwide. One of the main goals in nuclear astrophysics is to understand how energy is generated in stars, how elements are synthesized in stellar events and what the nature of neutron stars is. New experimental capabilities, the availability of radioactive beams and increased computational power paired with new astronomical observations have advanced the present knowledge. This review summarizes the progress in the field of nuclear astrophysics with a focus on the role of indirect methods and reactions involving beams of rare isotopes.

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Section: Isotope Separation On-line (Isol) Techniquesmentioning

confidence: 99%

Nuclear astrophysics with radioactive beams

2010

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“…One of these few is that of rubidium (Z = 37), measured by Belyaev et al [55] in 1980. These data have already been compared with the results of the present experiment in Ref.…”

Section: A Nuclide Productionmentioning

confidence: 99%

“…In the reaction 238 U + hydrogen at 1 A GeV, apart from spallation reactions, which produce rather heavy fragments (at Z 75, see Ref. [11]), most part of the cross section of the mediummass residues results from fission reactions ( [12,[25][26][27][28]). One of the most important signatures of fission is the binary nature of the decay process.…”

Section: Introductionmentioning

confidence: 99%

Light nuclides produced in the proton-induced spallation ofU238at 1 GeV

et al. 2006

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The production of light and intermediate-mass nuclides formed in the reaction 1 H + 238 U at 1 GeV was measured at the Fragment Separator at GSI, Darmstadt. The experiment was performed in inverse kinematics, by shooting a 1 A GeV 238 U beam on a thin liquid-hydrogen target. A total of 254 isotopes of all elements in the range 7 Z 37 were unambiguously identified, and the velocity distributions of the produced nuclides were determined with high precision. The results show that the nuclides are produced in a very asymmetric binary decay of heavy nuclei originating from the spallation of uranium. All the features of the produced nuclides merge with the characteristics of the fission products as their mass increases.

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“…Measurements of primary isotopic cross sections had been performed for alkalines only. Using fast on-line separator techniques combined with the chemical selectivity of surface ionisation ion-sources [2,3] relative cross sections were obtained covering a wide range of isotopes. The normalisation of the yields to cross sections was based on the results of G. Friedlander [1].…”

Section: Comparison With Previous Isotopic Distributionsmentioning

confidence: 99%

“…This pioneering work already characterises the evolution of the symmetric breaking of the excited fragmentation residues as a function of the incident energy. A decade later, similar measurements on alkalines were undertaken using on-line mass separators [2,3] which we will use as a basis for comparison in the following. Meanwhile many results evaluated in reference [4] were obtained to complete these first studies.…”

Section: Introductionmentioning

confidence: 99%