Nuclear data sheets for A = 57

Burrows, T.W.; Bhat, M.R.

doi:10.1016/s0090-3752(86)80047-3

Cited by 40 publications

(11 citation statements)

References 247 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The energies, spins, parities, and branching ratios of the discrete levels were selected from the Nuclear Data Sheets [16]. In the continuum region the level density was calculated by the back-shifted formula [17] with the level density parameter given in Ref.…”

mentioning

confidence: 99%

Excitation function and isomeric cross-section ratio for theNi61(p,α)
Sudár
¹
,
Szelecsényi
²
,
Qaim
³

1993
Phys. Rev. C
27
2
7
0
View full text Add to dashboard Cite

Excitation functions were measured by the stacked-foil technique for 'Ni(p, a)' Co and 'Ni(p, a)' Co + reactions using 88.84% enriched 'Ni from threshold up to 18.6 MeV. Thin samples of 'Ni were prepared by electrodeposition on gold foils. The radioactivity of the activation products was determined via high resolution x-and y-ray spectrometry. From the measured experimental data isomeric cross-section ratios [o /o +s ] were deduced. Statistical model calculations taking into account precompound effects were performed for the strong 'Ni(p, xn) channels as well as for the weak 'Ni(p, cx) process. The experimental 'Ni(p, xn) and 'Ni(p, o. ) excitation functions are described well by the calculation over the whole investigated energy range. The isomeric cross-section ratio for the isomeric pair Co formed in the 'Ni(p, a) process is also reproduced well by the model calculation, provided the input level scheme and the spin distribution are properly taken into account. PACS number(s): 25.40.Ep, 24.60.DrStudies of excitation functions of nuclear reactions are of considerable importance for testing nuclear models. Of special interest are investigations on isomeric crosssection ratios, particularly as a function of energy, since they should depict the effect of nuclear spin. Model calculations of the isomeric states have to account for more detail and, furthermore, depend critically on the input level scheme of the residual nucleus (cf. Refs. [1,2]). In this work we chose to investigate the 'Ni(p, a) Co process, where special techniques of sample preparation and radioactivity measurement were required. The aim was to test the predictive power of the model calculation.

show abstract

mentioning

confidence: 99%

Excitation function and isomeric cross-section ratio for theNi61(p,α)
Sudár
¹
,
Szelecsényi
²
,
Qaim
³

1993
Phys. Rev. C
27
2
7
0
View full text Add to dashboard Cite

show abstract

“…The energies, spin, parities, and branching ratios of the discrete levels were selected from Ref. [35]. In the continuum region the level density was calculated by the "back-shifted" formula (cf.…”

Section: Nuclear Model Calculationsmentioning

confidence: 99%

Excitation functions and isomeric cross section ratio of theNi58(n,p)
Buczkó
¹
,
Csikai
²
,
Sudár
³

et al. 1995
Phys. Rev. C
21
0
5
0
View full text Add to dashboard Cite

The cross sections for the Ni(n, p) Co s reactions were measured in the neutron energy range 2. 1 -14.8 MeV using the activation technique in combination with high-resolution gamma-ray spectroscopy. Neutrons were produced via the H(d, n) He and H(d, n) He reactions using solid TiD, TiT, and deuterium gas targets.The isomeric cross section ratio was determined in the 5.38 -12.2 MeV range and at 14.8 MeV neutron energy. Statistical model calculations taking into account precompound effects were performed for the formation of the isomeric and ground states of the Co. The calculational results based on the "back-shifted" level density model agree well with the measured excitation functions and render possible the selection of the most probable values of isomeric cross section ratios among the discrepant data obtained around 2 and 14 MeV neutron energies. PACS number(s):24.60. Dr, 25.40.h, 28.20.v

show abstract

“…1. Table 1 shows the gamma-ray energies and relative intensities observed in this work and quoted in [2]. The detector efficiency was determined with 152Eu, 133Ba and 2~ calibrated sources.…”

Section: Single Measurementsmentioning

confidence: 99%

“…The energy calibration was performed using gamma-ray lines from 56C0, 57C0 and 58C0 sources [13], which were produced simultaneously with 57Ni" In order to obtain the accurate energies for gamma-rays reported here, a statistical procedure using cascade cross-over re- [14]. In addition to the gamma-rays cited in [2], the spectrum exhibits seven other transitions: 304.1,696.0, 1350.5 and 1603.3 keV (observed in this work for the first time) and the gamma-rays 541.9, 755.3 and 1280.0 keV (already observed in earlier works [2]). The uncertainties in the relative gamma-ray intensities from 5 VNi were determined using the whole covariance matrix of the adjusted efficiency.…”

Section: Single Measurementsmentioning

confidence: 99%

Beta decay of57Ni

Scardino

Helene

Pascholati

et al. 1990

Z. Physik A - Atomic Nuclei

View full text Add to dashboard Cite

The decay of 57Ni was studied using both single and coincidence gamma-ray spectroscopy. Four new low-intensity transitions were observed in the single spectra. The energies and intensities of these transitions related to the 1378 keV transition were determined as 304.1 keV, 0.002%; 696.0keV, 0.001%, 1350.5keV, 0.002% and 1603.3 keV, 0.005%. Weak transitions at 541.9, 755.3 and 1279.9 keV were confirmed in agreement to earlier works, and their intensities related to 1378 keV were determined as 0.005%, 0.007% and 0.0012%, respectively.

show abstract

Nuclear data sheets for A = 57

Cited by 40 publications

References 247 publications

Excitation function and isomeric cross-section ratio for theNi61(p,α)
Sudár
¹
,
Szelecsényi
²
,
Qaim
³

1993
Phys. Rev. C
27
2
7
0
View full text Add to dashboard Cite

Excitation function and isomeric cross-section ratio for theNi61(p,α)
Sudár
¹
,
Szelecsényi
²
,
Qaim
³

1993
Phys. Rev. C
27
2
7
0
View full text Add to dashboard Cite

Excitation functions and isomeric cross section ratio of theNi58(n,p)
Buczkó
¹
,
Csikai
²
,
Sudár
³

et al. 1995
Phys. Rev. C
21
0
5
0
View full text Add to dashboard Cite

Beta decay of57Ni

Contact Info

Product

Resources

About

Nuclear data sheets for A = 57

Cited by 40 publications

References 247 publications

Excitation function and isomeric cross-section ratio for theNi61(p,α)Sudár1, Szelecsényi2, Qaim3 1993Phys. Rev. C27270View full textAdd to dashboardCite

Excitation function and isomeric cross-section ratio for theNi61(p,α)Sudár1, Szelecsényi2, Qaim3 1993Phys. Rev. C27270View full textAdd to dashboardCite

Excitation functions and isomeric cross section ratio of theNi58(n,p)Buczkó1, Csikai2, Sudár3 et al. 1995Phys. Rev. C21050View full textAdd to dashboardCite

Beta decay of57Ni

Contact Info

Product

Resources

About

Excitation function and isomeric cross-section ratio for theNi61(p,α)
Sudár
¹
,
Szelecsényi
²
,
Qaim
³

1993
Phys. Rev. C
27
2
7
0
View full text Add to dashboard Cite

Excitation function and isomeric cross-section ratio for theNi61(p,α)
Sudár
¹
,
Szelecsényi
²
,
Qaim
³

1993
Phys. Rev. C
27
2
7
0
View full text Add to dashboard Cite

Excitation functions and isomeric cross section ratio of theNi58(n,p)
Buczkó
¹
,
Csikai
²
,
Sudár
³

et al. 1995
Phys. Rev. C
21
0
5
0
View full text Add to dashboard Cite