Isotopic production cross sections of residual nuclei in the spallation reaction<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Xe</mml:mi><mml:mprescripts /><mml:none /><mml:mn>136</mml:mn></mml:mmultiscripts><mml:mspace width="3pt" /><mml:mo>(</mml:mo><mml:mrow><mml:mn>200</mml:mn><mml:mi>A</mml:mi></mml:mrow><mml:mspace width="3pt" /><mml:mtext>MeV</mml:mtext><mml:mo>)</mml:mo><mml:mspace width="3pt" /><mml:mo>+</mml:mo><mml:mspace width="3pt" /><mml:mi>p</mml:mi></mm

Paradela, C.; Tassan‐Got, L.; Benlliure, J.; Rodríguez-Sánchez, J. L.; Audouin, L.; Boudard, A.; Casarejos, E.; Enqvist, T.; Ducret, J. E.; Farget, F.; Fernández–Domínguez, B.; Ordonez, M. F.; Giot, L.; Heinz, A.; Henzl, V.; Henzlová, D.; Kelić-Heil, A.; Lafriaskh, A.; Leray, S.; Napolitani, P.; Pereira, J.; Pérez–Loureiro, D.; Ricciardi, M. V.; Stéphan, C.; Schmidt, K.‐H.; Schmitt, C.; Villagrasa, C.; Volant, C.; Yordanov, O.

doi:10.1103/physrevc.95.044606

Cited by 16 publications

(17 citation statements)

References 61 publications

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“…The cross sections for fragments in the 0.2A GeV 136 Xe + p reaction are taken from Refs. [45]. The cross sections for fragments in the 0.5A GeV 136 Xe + p and 136 Xe + d reactions are taken from Refs.…”

Section: Resultsmentioning

confidence: 99%

Pairing-energy coefficients of neutron-rich fragments in spallation reactions

Niu

2018

Chinese Phys. C

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The ratio of pairing-energy coefficient to temperature (ap/T ) of neutron-rich fragments produced in spallation reactions has been investigated by adopting an isobaric yield ratio method deduced in the framework of a modified Fisher model. A series of spallation reactions, 0.5A and 1A GeV 208 Pb + p, 1A GeV 238 U + p, 0.5A GeV 136 Xe + d, 0.2A, 0.5A and 1A GeV 136 Xe + p, and 56 Fe + p with incident energy ranging from 0.3A to 1.5A GeV, has been analysed. An obvious odd-even staggering is shown in the fragments with small neutron excess (I ≡ N −Z), and in the relatively small-A fragments which have large I. The values of ap/T for the fragments, with I from 0 to 36, have been found to be in a range from -4 to 4, and most values of ap/T fall in the range from -1 to 1. It is suggested that a small pairing-energy coefficient should be considered in predicting the cross sections of fragments in spallation reactions. It is also concluded that the method proposed in this article is not good for fragments with A/As > 85% (where As is the mass number of the spallation system).

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Section: Resultsmentioning

confidence: 99%

Pairing-energy coefficients of neutron-rich fragments in spallation reactions

Niu

2018

Chinese Phys. C

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“…The cross sections for the reactions of 136 Xe + p at 168, 200 [18], 500 [17], and 1000 MeV/nucleon [15] are presented in Fig. 6 to exhibit the energy dependence of σ p .…”

Section: Energy Dependence Investigationmentioning

confidence: 99%

“…In contrast, for the isotopes with Z < 53, the cross sections at higher reaction energy become larger due to the induced higher excitation energy of the prefragments, consistent with that observed in the deuteron-target data. [18], 500 [17], and 1000 MeV/nucleon [15], respectively. The open points at 200 MeV/nucleon represent the extrapolated values [18].…”

Section: Energy Dependence Investigationmentioning

confidence: 99%

“…The reaction mechanisms of the spallation reaction have been investigated by measuring the cross sections for many systems using different projectile-target combinations at various energies, such as 137 Cs + p, d at 185 MeV/nucleon [9]; 107 Pd + p, d at 100 and 200 MeV/nucleon [10]; 93 Zr + p, d at 105 MeV/nucleon [11]; 56 Fe + p from 300 MeV/nucleon to 1.5 GeV/nucleon [12]; and 197 Au + p at 800 MeV/nucleon [13]. In particular, many experiments were performed to study the reactions of 136 Xe [14][15][16][17][18][19], which is one of the most important nuclei to be used as a primary beam for the production of unstable nuclei. However, the studies have been mainly restricted to proton-induced reactions.…”

Section: Introductionmentioning

confidence: 99%

“…The newly obtained data, together with the previous ones in Refs. [15][16][17][18], can be used to systematically study the reaction mechanisms. In addition, the wide range of data for 136 Xe play important roles in validating the theoretical calculations.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Spallation and fragmentation cross sections for 168 MeV/nucleon Xe136 ions on proton, deuteron, and carbon targets

et al. 2020

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The spallation and fragmentation reactions of 136 Xe induced by proton, deuteron, and carbon targets at 168 MeV/nucleon were studied at RIKEN Radioactive Isotope Beam Factory via the inverse kinematics technique. A wide range of isotopic distributions of the reaction cross sections has been obtained and systematically analyzed by using the Particle and Heavy Ion Transport code System (PHITS) including dynamical and intranuclear cascade processes plus evaporation process, the semi-empirical parametrization for residue cross sections in spallation reactions (SPACS) and empirical parametrization of fragmentation cross sections (EPAX), and the deuteron-induced reaction analysis code system (DEURACS) incorporating the deuteron breakup effect. The carbon target has exhibited strong potential to produce light-mass isotopes far away from the projectile, in comparison to proton and deuteron targets. This may be attributed to the possible higher excitation energies of the prefragment induced by heavier target. It is demonstrated that the deuteron target has advantages to produce isotopic chains very close to the projectile and also the neutron-rich nuclei in other isotopic chains far away from the projectile, due basically to its structure property and the effect of the breakup neutron in the peripheral collision processes. The proton target has the advantage of being able to produce isotopes produced via charge-pickup reactions in comparison to other targets. The prediction powers of various calculation codes are examined with respective to the experimental isotopic distributions. The target and energy dependences of the produced mass distributions are also discussed.

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Cross-section measurement in the reactions of ¹³⁶Xe on proton, deuteron and carbon

et al. 2020

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The isotopic production cross sections for the reactions of 136Xe induced by proton, deuteron and carbon at 168 MeV/u were obtained by using the inverse kinematics technique at RIKEN Radioactive Isotope Beam Factory. The target dependence of the cross sections was investigated systematically. It was found that for the light-mass products, the cross sections on carbon are larger than those on deuteron and proton. The measured cross sections on proton were compared with the previous data at higher reaction energies to study the energy dependence. The experimental results were compared with the theoretical calculations including both the intranuclear cascade and evaporation processes using PHITS and with the EPAX and SPACS empirical parameterizations.

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Isotopic production cross sections of residual nuclei in the spallation reactionXe136(200AMeV)+p

Cited by 16 publications

References 61 publications

Pairing-energy coefficients of neutron-rich fragments in spallation reactions

Pairing-energy coefficients of neutron-rich fragments in spallation reactions

Spallation and fragmentation cross sections for 168 MeV/nucleon Xe136 ions on proton, deuteron, and carbon targets

Cross-section measurement in the reactions of ¹³⁶Xe on proton, deuteron and carbon

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Isotopic production cross sections of residual nuclei in the spallation reactionXe136(200AMeV)+p

Cited by 16 publications

References 61 publications

Pairing-energy coefficients of neutron-rich fragments in spallation reactions

Pairing-energy coefficients of neutron-rich fragments in spallation reactions

Spallation and fragmentation cross sections for 168 MeV/nucleon Xe136 ions on proton, deuteron, and carbon targets

Cross-section measurement in the reactions of 136Xe on proton, deuteron and carbon

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Product

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Cross-section measurement in the reactions of ¹³⁶Xe on proton, deuteron and carbon