Comparison of (d,p) and (n,$gamma$) reactions on the nuclei $sup 58$Ni, $sup 60$Ni, $sup 62$Ni, and $sup 64$Ni (in German)
Technical Report
·
OSTI ID:4937640
Thesis. Submitted by P. Gippner to Technische Univ., Dresden (East Germany). Using a 5.5 cm/sup 3/-Ge(Li)-detector the thermal neutron capture gamma -ray spectra of the reactions /sup 58/Ni(n, gamma )/sup 59/Ni, /sup 60/ Ni(n, gamma )/ sup 61/Ni, /sup 62/Ni(n gamma )/sup 63/Ni and /sup 64/Ni(n gamma )/sup 65/Ni were studied by stra ight spectroscopy. The reduced intensities I/ sub gamma //E /sup 3/ have been compared with the (2I/sub f/+ 1)S values of the 1,= 1 levels determined in the (d,p) reaction. This comparison shows, that for the low-lying states of /sup 59/Ni and /sup 61/Ni the primary gamma - radiation mostly populates the components target ground state + p-neutron.'' A good correlation between I gamma /E gamma /sup 3/ and (2I/sub f/+ 1)S values for 1/sub n/ = 1 le vels of /sup 59/Ni and /sup 61/Ni has been found. This correlation and an analysis of the thermal neutron cross section suggest a contribution of potential capture in the /sup 58/Ni(n, gamma )/sup 59/Ni and /sup 60/Ni(n, gamma )/sup 6 1/Ni reactions. In the case of /sup 63/Ni the comparison of (d,p) and (n, gamma ) probabilities indicates, that not only the component target ground state + pneutron'' of the low-lying states is populated by the capturing state. For instance it seems possible to populate the term first excited target state + p-neutron,'' by the component first excited target state + d-neutron'' of the capturing state. The remarkable differences between the ground state and first excited state transitions can be explained by coherent influence of certain terms in the B(E1) matrix elements. Assuming a /sup 56/Ni core shell model calculations were made in the region of /sup 58/Ni to /sup 64/Ni. Effective two particle matrix elements are used. The observed wave functions allow a qualitative discussion of the components target state + j-neutron'' (j = p/sub 3/2/, f/sub 5/2/, p/sub 1/2/,) in the low-lying states of /sup 59/Ni, / sup 61/Ni, /sup 63/Ni, and /sup 65/Ni and a conclusion on the capture mechanism in the examined reactions. (auth)
- Research Organization:
- Zentralinstitut fuer Kernforschung, Rossendorf bei Dresden (German Democratic Republic)
- Sponsoring Organization:
- Sponsor not identified
- NSA Number:
- NSA-29-019686
- OSTI ID:
- 4937640
- Report Number(s):
- ZFK--215
- Country of Publication:
- Germany
- Language:
- German
Similar Records
Thermal-neutron capture by {sup 58}Ni, {sup 59}Ni, and {sup 60}Ni
CROSS SECTIONS FOR THE Ni$sup 58$($alpha$,p), Ni$sup 58$($alpha$,$gamma$), AND Co$sup 59$($alpha$,n) REACTIONS
NEUTRON CROSS SECTION EVALUATION GROUP NEWSLETTER NO. 2, OCTOBER 1960
Journal Article
·
Fri Oct 01 00:00:00 EDT 2004
· Physical Review. C, Nuclear Physics
·
OSTI ID:20695658
CROSS SECTIONS FOR THE Ni$sup 58$($alpha$,p), Ni$sup 58$($alpha$,$gamma$), AND Co$sup 59$($alpha$,n) REACTIONS
Journal Article
·
Sun Feb 23 23:00:00 EST 1964
· Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D
·
OSTI ID:4087661
NEUTRON CROSS SECTION EVALUATION GROUP NEWSLETTER NO. 2, OCTOBER 1960
Technical Report
·
Mon Oct 30 23:00:00 EST 1961
·
OSTI ID:4125252
Related Subjects
CAPTURE
DEUTERON REACTIONS
ENERGY-LEVEL TRANSITIONS
GAMMA RADIATION
N68651* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
59 <= A <= 89--Nuclear Reactions & Scattering
NEUTRON REACTIONS
NICKEL 58
NICKEL 59
NICKEL 60
NICKEL 61
NICKEL 62- - NICKEL 64
NICKEL 63
NICKEL 65
ONE-NUCLEON TRANSFER REACTIONS
SHELL MODELS
STRIPPING
THERMAL NEUTRONS
DEUTERON REACTIONS
ENERGY-LEVEL TRANSITIONS
GAMMA RADIATION
N68651* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
59 <= A <= 89--Nuclear Reactions & Scattering
NEUTRON REACTIONS
NICKEL 58
NICKEL 59
NICKEL 60
NICKEL 61
NICKEL 62- - NICKEL 64
NICKEL 63
NICKEL 65
ONE-NUCLEON TRANSFER REACTIONS
SHELL MODELS
STRIPPING
THERMAL NEUTRONS