Fast neutron fission of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Am</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>241</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>

Sigg, R.A.; Kantelo, M.V.; Sisson, D.H.; Prindle, A.L.; Nethaway, D.R.

doi:10.1103/physrevc.27.245

Cited by 14 publications

(5 citation statements)

References 9 publications

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“…Thus the higher yields of fission products around mass numbers 133-135 and 143-145 in both even-Z and odd-Z fissioning systems are due to the presence of spherical 82n and deformed 88n shells, respectively. As a result an average mass of 138 ± 1 over the heavy mass region [14][15][16][17][18][19][20][21][22] has been observed due to higher yields of fission products around mass numbers 133-135 and 143-145. Aside from the shell effect, the N/Z value also determines the average mass and charge combination [52][53][54].…”

Section: Discussionmentioning

confidence: 94%

“…The yields of fission products relevant to mass and charge distribution studies in the neutron-induced fission of actinides from Ac to Fm and the spontaneous fission of heavier actinides are available in different compilations [10][11][12][13]. However, most of the fission yield data available in the literature are for the thermal neutron- [10][11][12][13] or reactor neutron-induced [14][15][16][17][18][19][20][21][22] fission of actinides. For mono-energetic neutron-induced fission, most of the data available are for actinides induced by either 3 or 14 MeV neutrons [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mass distribution in the bremsstrahlung-induced fission of 232Th, 238U and 240Pu

Naik

Nimje²,

Raj³

et al. 2011

Nuclear Physics A

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Section: Discussionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Mass distribution in the bremsstrahlung-induced fission of 232Th, 238U and 240Pu

Naik

Nimje²,

Raj³

et al. 2011

Nuclear Physics A

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“…Thus, the higher yields of fission products for A = 133-134 and 143-144 in both even-Z and odd-Z fissioning systems are due to the presence of spherical 82n and deformed 86-88n shells, respectively. As a result, an average mass of 138 ± 1 over the heavy-mass region [8][9][10][11][12][13][14][15][16] has been observed due to higher yields of fission products for A = 133-134 and 143-144. Besides the shell effect, the N/Z value also determines the average mass and charge combination [44][45][46].…”

Section: Nuclidementioning

confidence: 99%

“…The yields of fission products relevant to mass-and charge-distribution studies in the neutron-induced fission of actinides from Ac to Fm and the spontaneous fission of heavier actinides are available in different compilations [4][5][6][7]. However, most of the fissionyield data available in the literature are for the thermal neutron- [4][5][6][7] or the reactor neutron-induced [8][9][10][11][12][13][14][15][16] fission * gnkim@knu.ac.kr of actinides. For monoenergetic neutron-induced fission, most of the data available are for actinides induced by either 3-or 14-MeV neutrons [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Mass distribution in the 50-, 60-, and 70-MeV bremsstrahlung-induced fission of232Th

Naik¹,

Nathaniel²,

Goswami³

et al. 2012

Phys. Rev. C

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The postneutron yields of various fission products in the mass regions of 77-153 have been determined in the 50-, 60-, and 70-MeV bremsstrahlung-induced fission of 232 Th by using a recoil catcher and an off-line γ -ray spectrometric technique in the electron linac at the Pohang Accelerator Laboratory, Korea. The mass-yield distributions were obtained from the fission-product yield data using charge-distribution corrections. The fission yields of the present paper and the existing data from the 232 Th(γ ,f ) reaction at various energies are compared with those from the 232 Th(n,f ), the 238 U(n,f ), and the 238 U(γ ,f ) reactions. We observe that the yields of fission products for A = 133-134, A = 138-139, A = 143-144, and their complementary products in the above fissioning systems are higher than those of other fission products, which is explained based on the nuclear-structure effect. However, we observed that the yields of fission products for A = 133-134 were lower than those for A = 143-144 in the 232 Th(γ ,f ) reaction compared to those of the 232 Th(n,f ), 238 U(n,f ), and 238 U(γ ,f ) reactions. The yields of fission products for A = 133-134 increase, but those for A = 143-144 decrease with an increase in the excitation energy in the 232 Th(γ ,f ) and 232 Th(n,f ) reactions; however, those trends are reversed in the 238 U(γ ,f ) and 238 U(n,f ) reactions. The increasing or decreasing trends for the yields of fission products for A = 133-134 and A = 143-144 with the excitation energy in the 232 Th(γ ,f ), 232 Th(n,f ), 238 U(n,f ), and 238 U(γ ,f ) reactions are explained from the shell effect of the complementary products based on the static scission-point model and the standard I and II channels of bimodal fission. The peak-to-valley (P/V) ratio for the above fissioning systems also was obtained from the mass-yield distribution. The P/V ratio for the 232 Th(γ ,f ) and 238 U(γ ,f ) reactions at different energies from the present data and the existing literature data are interpreted to examine the role of excitation energy.

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“…The calculated mass distributions of independent yields and cumulative yields from 241 Am(n,f) reaction are shown in Fig. 2, which are compared with experimental data [20,21] as well as the evaluated nuclear data from ENDF/B-VII.1. Compared with the G4ParaFissionModel [19], the calculated mass distributions results from the potential-driving model are better agreement with the experiment data and ENDF/B-VII.1 data.…”

Section: Potential-driving Modelmentioning

confidence: 99%

Monte-Carlo calculation of fission process for neutron-induced typical actinide nuclei fission

et al. 2020

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A global potential-driving model with well-determined parameters is proposed by uniting the empirical asymmetric fission potential and the empirical symmetric fission potential, which can precisely calculate the pre-neutron-emission mass distributions for neutron-induced actinide nuclei fission. Based on the developed potential-driving model, Monte-Carlo code calculates the characteristics of fission reaction process for neutron-induced 241 Am fission. Typical calculated results, including yields, kinetic energy distributions, fission neutron spectrum and decay γ-ray spectrum, are compared with experimental data and evaluated data. It shows that the Monte-Carlo calculated results agree quite well with the experiment data, which indicate that Monte-Carlo code with the developed potential-driving model can reproduce and predict the characteristics of fission reaction process at reasonable energy ranges. Given the well predictions on the characteristics of fission reaction process, Monte-Carlo code with the developed potential-driving model can guide for the physical design of nuclear fission engineering.

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Fast neutron fission ofAm241

Cited by 14 publications

References 9 publications

Mass distribution in the bremsstrahlung-induced fission of 232Th, 238U and 240Pu

Mass distribution in the bremsstrahlung-induced fission of 232Th, 238U and 240Pu

Mass distribution in the 50-, 60-, and 70-MeV bremsstrahlung-induced fission of232Th

Monte-Carlo calculation of fission process for neutron-induced typical actinide nuclei fission

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