Excitation functions and isomeric cross section ratios of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Cu</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>63</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>(<i>n</i>,α<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mo>)</mml:mo></mml:mrow><mml:

Cserpâk, F.; Sudár, S.; Csikai, J.; Qaim, S.M.

doi:10.1103/physrevc.49.1525

Cited by 59 publications

(29 citation statements)

References 29 publications

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“…With the increasing incident neutron energy the ratio increases, showing that at higher excitation energies the formation of the high-spin isomer is more favored. This trend is similar to that for several other neutron-and charged-particle-induced reactions near their thresholds [16,17,[39][40][41][42][43][44]. The increase seems to be more pronounced for 195 Hg m,g than for 197 Hg m,g .…”

Section: B Isomeric Cross-section Ratiossupporting

confidence: 86%

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Cross sections and isomeric cross-section ratios in the interactions of fast neutrons with isotopes of mercury

et al. 2006

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3 He reaction using a deuterium gas target at the Jülich variable energy compact cyclotron CV 28. Use was made of the activation technique in combination with high-resolution, high-purity Ge detector γ -ray spectroscopy. All the data were measured for the first time over the investigated energy range. The transition from the present low-energy data to the literature data around 14 MeV is generally good. Nuclear model calculations using the codes STAPRE and EMPIRE-2.19, which employ the statistical and precompound model formalisms, were undertaken to describe the formation of both the isomeric and ground states of the products. The total reaction cross section of a particular channel is reproduced fairly well by the model calculations, with STAPRE giving slightly better results. Regarding the isomeric cross sections, the agreement between the experiment and theory is only in approximate terms. A description of the isomeric cross-section ratio by the model was possible only with a very low value of η, i.e., the eff / rig ratio.

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Section: B Isomeric Cross-section Ratiossupporting

confidence: 86%

“…Refs. [11][12][13][14][15][16][17]). The uncertainty in the excitation function of the monitor reaction was taken as 4% and that in the averaging of the neutron flux as 5%.…”

Section: E Calculation Of Cross Sections and Their Uncertaintiesmentioning

confidence: 99%

Cross sections and isomeric cross-section ratios in the interactions of fast neutrons with isotopes of mercury

et al. 2006

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“…This trend is similar to that for several other neutron-and charged-particle-induced reactions near thresholds [35][36][37][38][39][40][41][42][43][44]. In the range of 13-15 MeV, the calculated isomeric cross section ratio shows the same slightly increasing trend for the six ldmodels.…”

Section: Isomeric Cross Section Ratiosupporting

confidence: 86%

Activation cross section and isomeric cross section ratio for the 76Ge(n,2n)75m,gGe process

Luo

Wang

2018

Eur. Phys. J. A

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Abstract. We measured neutron-induced reaction cross sections for the 76 Ge(n, 2n) 75m,g Ge reactions and their isomeric cross section ratios σ m/σg at three neutron energies between 13 and 15 MeV by an activation and off-line γ-ray spectrometric technique using the K-400 Neutron Generator at the Chinese Academy of Engineering Physics (CAEP). Ge samples and Nb monitor foils were activated together to determine the reaction cross section and the incident neutron flux. The monoenergetic neutron beams were formed via the 3 H(d, n) 4 He reaction. The pure cross section of the ground state was derived from the absolute cross section of the metastable state and the residual nuclear decay analysis. The cross sections were also calculated using the nuclear model code TALYS-1.8 with different level density options at neutron energies varying from the reaction threshold to 20 MeV. Results are discussed and compared with the corresponding literature data.

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“…The isomeric cross-section ratios shown in Figs. 4 and 7 increase nearly linearly with the increasing projectile energy, thereby confirming the higher probability of formation of the higher spin isomer with the increasing excitation energy of the composite nucleus [1,2]. Furthermore, a comparison of the absolute values of the ratios (Figs.…”

Section: A Excitation Functions and Isomeric Cross-section Ratiossupporting

confidence: 56%

“…It is known that the isomeric cross-section ratio, especially near the threshold of the reaction, is dependent on the spins of the levels involved, rather than on their separation energies [1,2]. Through detailed investigations on several isomeric pairs, involving different combinations of target, projectile, and ejectile, the effects of changes in the ratio of the effective moment of inertia to the rigid-body moment of inertia (η = eff / rigid ), assumptions regarding the spin distribution after preequilibrium (PE) decay, and the role of input nuclear structure information have been elaborated [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Formation of the isomeric pair194Irm,gin interactions ofαparticles with
Uddin
¹
,
Sudár
²
,
Qaim
³

2011
Phys. Rev. C
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Cross sections were measured by the activation technique for the nuclear processes 192 Os(α,d+pn+np) 194 Ir m,g up to α-particle energies of 39 MeV. From the measured data the isomeric cross-section ratio was deduced as a function of projectile energy. The present experimental data as well as those for the 194 Pt(n,p) 194 Ir m,g reaction, given in the literature, were compared with the results of nuclear model calculations using the code TALYS, which combines the statistical, precompound, and direct interactions. In general, the experimental data were reproduced well by the model calculations, which were done using relatively low values of η (i.e., eff / rigid ). The results provide more evidence for the mass dependence of η. The level density parameter for 194 Ir was determined unambiguously.

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Excitation functions and isomeric cross section ratios of theCu63(n,α)

Cited by 59 publications

References 29 publications

Cross sections and isomeric cross-section ratios in the interactions of fast neutrons with isotopes of mercury

Cross sections and isomeric cross-section ratios in the interactions of fast neutrons with isotopes of mercury

Activation cross section and isomeric cross section ratio for the 76Ge(n,2n)75m,gGe process

Formation of the isomeric pair194Irm,gin interactions ofαparticles with
Uddin
¹
,
Sudár
²
,
Qaim
³

2011
Phys. Rev. C
Self Cite
19
0
11
0
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Excitation functions and isomeric cross section ratios of theCu63(n,α)

Cited by 59 publications

References 29 publications

Cross sections and isomeric cross-section ratios in the interactions of fast neutrons with isotopes of mercury

Cross sections and isomeric cross-section ratios in the interactions of fast neutrons with isotopes of mercury

Activation cross section and isomeric cross section ratio for the 76Ge(n,2n)75m,gGe process

Formation of the isomeric pair194Irm,gin interactions ofαparticles withUddin1, Sudár2, Qaim3 2011Phys. Rev. CSelf Cite190110View full textAdd to dashboardCite

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Formation of the isomeric pair194Irm,gin interactions ofαparticles with
Uddin
¹
,
Sudár
²
,
Qaim
³

2011
Phys. Rev. C
Self Cite
19
0
11
0
View full text Add to dashboard Cite