Cross-section measurement for the 67Zn(n, $ \alpha$ )64Ni reaction at 6.0 MeV

Zhang, Guohui; Wu, Hao; Zhang, Jiaguo; Liu, Jiaming; Chen, Jinxiang; Gledenov, Yu. M.; Sedysheva, M. V.; Khuukhenkhuu, G.; Szalanski, P.

doi:10.1140/epja/i2009-10886-2

Cited by 18 publications

(16 citation statements)

References 5 publications

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“…The data acquisition system was essentially the same as that in Ref. [9]. Cathode-anode coincidence spectra for the two sections of the ionization chamber were recorded from which the number of forward and backward α events was obtained.…”

Section: Details Of Experimentsmentioning

confidence: 99%

Cross-section measurement and analysis for theSm149(n,α)Nd
Gledenov
¹
,
Zhang
²
,
Khuukhenkhuu
³

et al. 2010
Phys. Rev. C
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We have measured the 149 Sm(n,α) 146 Nd cross section at 6.0 MeV to be 0.12 ± 0.018 mb. This is the first reported result for this cross section in the MeV region and so should be helpful for constraining nuclear data evaluations (which differ by a factor of 40 for this reaction at this energy) and for testing and improving nuclear models. The experiment was performed at the at the 4.5-MV Van de Graaff accelerator of Peking University. Neutrons were produced via the 2 H(d,n) 3 He reaction using a deuterium gas target, and absolute neutron flux was determined with a small 238 U fission chamber. Alpha particles were detected using a two-section gridded ionization chamber in which two large-area 149 Sm 2 O 3 samples were placed back-to-back so that the cross section and forward/backward ratio were measured for nearly the entire 4π solid angle. The data were compared to statistical-model predictions using the code TALYS. Good agreement between the measured and theoretical cross sections could be obtained with a small modification of the α-optical potential parameters from their default values in TALYS. However, we were not able to reproduce the measured forward/backward ratio. In addition, using the previously reported 147 Sm(n,α) 144 Nd cross section at 6.0 MeV together with our new result, good agreement was found between the measured and predicted cross-section ratio for these two isotopes. Finally, none of the existing evaluated data libraries are in agreement with our new data to within the experimental uncertainties.

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Section: Details Of Experimentsmentioning

confidence: 99%

Cross-section measurement and analysis for theSm149(n,α)Nd
Gledenov
¹
,
Zhang
²
,
Khuukhenkhuu
³

et al. 2010
Phys. Rev. C
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8
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0
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“…[6]. In the present work, the distances from the cathode to grid, grid to anode, and anode to shield were 61.0, 18.0, and 12.0 mm, respectively.…”

Section: Methodsmentioning

confidence: 48%

“…[6], except for two major differences. The first is a shorter distance from the neutron source to the 67 Zn samples to increase the neutron flux density.…”

Section: Introductionmentioning

confidence: 91%

“…Recently, we reported on the cross section measurement of the 67 Zn(n,α) 64 Ni reaction at 6.0 MeV using a twin-gridded ionization chamber as the α particle detector [6]. In the present work, the measurement of the cross section for the 67 Zn(n,α) 64 Ni reaction is repeated at 6.0 MeV for comparison * guohuizhang@pku.edu.cn and then measurements are extended to 5.0 and 4.0 MeV to get new and systematic results.…”

Section: Introductionmentioning

confidence: 99%

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Cross sections of theZn67(n,α)64
Zhang
¹
,
Liu
²
,
Wu
³

et al. 2010
Phys. Rev. C
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Experimental cross section data of the 67 Zn(n,α) 64 Ni reaction are very scanty because the residual nucleus 64 Ni is stable and the commonly used activation method is not feasible. As a result, very large deviations (about 10 times) exist among different nuclear data libraries. In the present work, cross sections of the partial 67 Zn(n,α 0 ) 64 Ni and total 67 Zn(n,α) 64 Ni reactions are measured at neutron energies of 4.0 and 5.0 MeV for the first time, and those of 6.0 MeV are remeasured for consistency checking. A twin-gridded ionization chamber was used as the charged-particle detector and two enriched back-to-back-set 67 Zn samples were adopted. Experiments were performed at the 4.5 MV Van de Graaff Accelerator of Peking University. Neutrons were produced through the 2 H(d, n) 3 He reaction using a deuterium gas target. Absolute neutron flux was determined by counting the fission fragments from a 238 U sample placed inside the gridded ionization chamber while a BF 3 long counter was employed as neutron flux monitor. Present data are compared with results of previous measurements, evaluations, and TALYS code calculations.

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“…The data-acquisition system (DAqS) can be found in Ref. [8]. Generally, for each neutron energy point, the experimental process in turn is as follows: 1) compound α source measurement for energy calibration of the DAqS, 2) foreground measurement for expected α events, 3) background measurement with tantalum sheets, 4) 238 U fission fragment measurement for neutron flux calibration with the BF 3 long counter, and 5) α source measurement again for checking the stability of the DAqS.…”

Section: Details Of Experimentsmentioning

confidence: 99%

Cross sections of the ¹⁴⁴Sm(n,α)¹⁴¹Nd and ⁶⁶Zn(n,α)⁶³Ni reactions at 4.0, 5.0 and 6.0 MeV

et al. 2017

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Abstract. Cross sections of the 144 Sm(n,α) 141 Nd and 66 Zn(n,α) 63 Ni reactions were measured at E n = 4.0, 5.0 and 6.0 MeV performed at the 4.5-MV Van de Graaff Accelerator of Peking University, China. A doublesection gridded ionization chamber was used to detect the alpha particles. The foil samples of 144 Sm 2 O 3 and enriched 66 Zn were placed at the common cathode plate of the chamber. Monoenergetic neutrons were produced by a deuterium gas target through the 2 H(d,n) 3 He reaction. The neutron flux was monitored by a BF 3 long counter. Cross sections of the 238 U(n,f) reaction were used as the standard to perform the (n,α) reaction measurement. Present results are compared with existing measurements and evaluations. They are generally in agreement with TALYS-1.6 code calculations. For the 144 Sm(n,α) 141 Nd reaction our measurements support the data of JEF-2.2. For the 66 Zn(n,α) 63 Ni reaction present results support the data of EAF-2010 and TENDL-2015 data.

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Cross-section measurement for the 67Zn(n, $ \alpha$ )64Ni reaction at 6.0 MeV

Cited by 18 publications

References 5 publications

Cross-section measurement and analysis for theSm149(n,α)Nd
Gledenov
¹
,
Zhang
²
,
Khuukhenkhuu
³

et al. 2010
Phys. Rev. C
Self Cite
8
1
4
0
View full text Add to dashboard Cite

Cross-section measurement and analysis for theSm149(n,α)Nd
Gledenov
¹
,
Zhang
²
,
Khuukhenkhuu
³

et al. 2010
Phys. Rev. C
Self Cite
8
1
4
0
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Cross sections of theZn67(n,α)64
Zhang
¹
,
Liu
²
,
Wu
³

et al. 2010
Phys. Rev. C
Self Cite
9
0
6
0
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Cross sections of the ¹⁴⁴Sm(n,α)¹⁴¹Nd and ⁶⁶Zn(n,α)⁶³Ni reactions at 4.0, 5.0 and 6.0 MeV

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Cross-section measurement for the 67Zn(n, $ \alpha$ )64Ni reaction at 6.0 MeV

Cited by 18 publications

References 5 publications

Cross-section measurement and analysis for theSm149(n,α)NdGledenov1, Zhang2, Khuukhenkhuu3 et al. 2010Phys. Rev. CSelf Cite8140View full textAdd to dashboardCite

Cross-section measurement and analysis for theSm149(n,α)NdGledenov1, Zhang2, Khuukhenkhuu3 et al. 2010Phys. Rev. CSelf Cite8140View full textAdd to dashboardCite

Cross sections of theZn67(n,α)64Zhang1, Liu2, Wu3 et al. 2010Phys. Rev. CSelf Cite9060View full textAdd to dashboardCite

Cross sections of the 144Sm(n,α)141Nd and 66Zn(n,α)63Ni reactions at 4.0, 5.0 and 6.0 MeV

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Cross-section measurement and analysis for theSm149(n,α)Nd
Gledenov
¹
,
Zhang
²
,
Khuukhenkhuu
³

et al. 2010
Phys. Rev. C
Self Cite
8
1
4
0
View full text Add to dashboard Cite

Cross-section measurement and analysis for theSm149(n,α)Nd
Gledenov
¹
,
Zhang
²
,
Khuukhenkhuu
³

et al. 2010
Phys. Rev. C
Self Cite
8
1
4
0
View full text Add to dashboard Cite

Cross sections of theZn67(n,α)64
Zhang
¹
,
Liu
²
,
Wu
³

et al. 2010
Phys. Rev. C
Self Cite
9
0
6
0
View full text Add to dashboard Cite

Cross sections of the ¹⁴⁴Sm(n,α)¹⁴¹Nd and ⁶⁶Zn(n,α)⁶³Ni reactions at 4.0, 5.0 and 6.0 MeV