Predicted levels of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">Be</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>9</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>based on a theoretical analysis of neutron double-differential cross sections at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi>E</mml:mi><mml:mrow><mml:mi>n</mml:mi></mml:mrow></mml:msub><mml:mo>=</mml:m

Duan, Junfeng; Zhang, Jingshang; Wu, Haicheng; Sun, Xiaojun

doi:10.1103/physrevc.80.064612

Cited by 9 publications

(24 citation statements)

References 20 publications

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“…It is worth mentioning that the contributions of two predicted energy levels 9.0(5/2 + ) and 10.0(5/2 + ) of 9 Be are added to obtain the DDCS of the total outgoing neutron as shown the solid lines in Figs. 3 and 4 [5] and Figs. 5 and 6 [2] both for neutron and proton induced 9 Be reactions.…”

Section: Resultsmentioning

confidence: 99%

Statistical theory of light nucleus reactions with 1p-shell light nuclei

Xiao-Jun

Zhang

2017

EPJ Web Conf.

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Abstract. The 1p-shell light elements (Li, Be, B, C, N, and O) had long been selected as the most important materials for improving neutron economy in thermal and fast fission reactors and in the design of acceleratordriven spallation neutron sources. A statistical theory of light nucleus reactions (STLN) is proposed to describe the double-differential cross sections for both neutron and light charged particle induced nuclear reactions with 1p-shell light nuclei. The dynamics of STLN is described by the unified Hauser-Feshbach and exciton model, in which the angular momentum and parity conservations are strictly considered in equilibrium and pre-equilibrium processes. The Coulomb barriers of the incoming and outgoing charged particles, which significantly influence the open channels of the reaction, can be reasonably considered in incident channel and different outgoing channels. In kinematics, the recoiling effects in various emission processes are strictly taken into account. The analytical energy and angular spectra of the reaction products in sequential and simultaneous emission processes are obtained in terms of the new integral formula proposed in our recent paper. Taking 12 C(n, xn), 9 Be(n, xn), 16 O(n, xn), and 9 Be(p,xn) reactions as examples, we had calculated the double-differential cross sections of outgoing neutrons and compared with the experimental data. In addition, we had also calculated the partition and total kerma coefficients for 12 C(n, xn) and 16 O(n, xn) reactions, respectively. The existing experimental data can be remarkably well reproduced by STLN, which had been used to set up file-6 in CENDL database.

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Section: Resultsmentioning

confidence: 99%

Statistical theory of light nucleus reactions with 1p-shell light nuclei

Xiao-Jun

Zhang

2017

EPJ Web Conf.

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“…6, are still deficiencies. So two predicted levels 9.0( 5 2 + ) and 10.0( 5 2 + ) between the 9th and 10th levels have been employed in this paper as neutron induced 9 Be reaction [26]. In Fig.…”

Section: A Analysis Of the Reaction Channelsmentioning

confidence: 99%

“…Thus, these reaction processes also belong to the reaction channel 9 Be(p, np2α) at the final state. Therefore, the particle emission processes of the first residual nucleus 9 Be * can be described as follows [26,27]…”

Section: A Analysis Of the Reaction Channelsmentioning

confidence: 99%

Statistical theory of light-nucleus reactions and application to theBe9(p,xn)reaction

Sun

Zhang

2016

Phys. Rev. C

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A statistical theory of light nucleus reaction (STLN) is proposed to describe both neutron and light charged particle induced nuclear reactions with 1p-shell light nuclei involved. The dynamic of STLN is described by the unified Hauser-Feshbach and exciton model, of which the angular momentum and parity conservations are considered in equilibrium and pre-equilibrium processes.The Coulomb barriers of the incident and outgoing charged particles, which seriously influence the open reaction channels, could be reasonably considered in the incident channel and the different outgoing channels. In kinematics, the recoiling effects in various emission processes are taken strictly into account. Taking 9 Be(p, xn) reaction as an example, we calculate the double-differential cross sections of outgoing neutrons and charged particles using PUNF code in the frame of STLN.The calculated results agree very well with the existing experimental neutron double-differential cross sections at E p = 18 MeV, and indicate that PUNF code is a powerful tool to set up file-6 in the reaction data library for the light charged particle induced nuclear reactions with 1p-shell light nuclei involved.

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“…Specially, there are double two-body breakup processes in light nucleus reactions. In the case of neutron induced 9 Be reaction [22,23], the compound nucleus 10 Be with excited energy E * can emit two 5 He, and each 5 He can spontaneously break up into a neutron and an alpha. The double-differential cross sections of these reaction processes can be derived by using the same approach as introduced above.…”

Section: Applications To Light Nucleus Reactionsmentioning

confidence: 99%

New integral formula and its applications to light nucleus reactions

Sun,

Zhang

2015

Preprint

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A new integral formula, which has not been compiled in any integral tables or mathematical softwares, is proposed to obtain the analytical energy-angular spectra of the particles that are sequentially emitted from the discrete energy levels of the residual nuclei in the statistical theory of light nucleus reaction (STLN). In the cases of the neutron induced light nucleus reactions, the demonstration of the kinetic energy conservation in the sequential emission processes becomes straightforward thanks to this new integral formula and it is also helpful to largely reduce the volume of file-6 in nuclear reaction databases. Furthermore, taking p+ 9 Be reaction at 18 MeV as an example, this integral formula is extended to calculate the energy-angular spectra of the sequentially emitted neutrons for proton induced light nucleus reactions in the frame of STLN.

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Predicted levels ofBe9based on a theoretical analysis of neutron double-differential cross sections atEn=

Cited by 9 publications

References 20 publications

Statistical theory of light nucleus reactions with 1p-shell light nuclei

Statistical theory of light nucleus reactions with 1p-shell light nuclei

Statistical theory of light-nucleus reactions and application to theBe9(p,xn)reaction

New integral formula and its applications to light nucleus reactions

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