Level structure measurements with the (p, α) reaction

Brown, G.E.; Macgregor, A.E.; Middleton, R.

doi:10.1016/0029-5582(66)90182-9

Cited by 41 publications

(1 citation statement)

References 16 publications

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“…tWork supported by the U. S. Army Research Office (Durham) and the Advanced Research Projects Agency Of those nuclei in the l/ 7/2 shell which are readily accessible to experimental investigation, V 47 is one of the least well studied. Thus, although in studies of the reactions Cr 50 (/>, a), 1 Ti 46 (p,y), 2 and Ti 47 (p,n), 3 energy levels have been observed up to about 3 MeV in excitation, in no cases have spin-parity assignments been made. In particular, the assumed 4 f ~~ character for the ground state of V 47 has been based largely on its observed fi + decay.…”

mentioning

confidence: 99%

32−Ground State ofV47
Rosner
¹
,
Pullen
²

1967
Phys. Rev. Lett.
12
0
0
0
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perature display a first-order transition in U0 2 , but in the lattice properties, in contrast to Blume's hypothesis. This result would suggest a re-examination of the transition mechanism in U0 2 . Part of the data on elastic constant versus temperature is in accord with the idea of a first-order phase change, but C 44 versus temperature would seem to be quite anomalous and indicative of a considerable interaction between lattice and spins well above the transition.We are grateful to Dr. H. J. Anderson of Battelle-Northwest for supplying us with good single crystals. We are also grateful to Dr. J. A. Marcus for the use of his equipment. tWork supported by the U. S. Army Research Office (Durham) and the Advanced Research Projects Agency Of those nuclei in the l/ 7/2 shell which are readily accessible to experimental investigation, V 47 is one of the least well studied. Thus, although in studies of the reactions Cr 50 (/>, a), 1 Ti 46 (p,y), 2 and Ti 47 (p,n), 3 energy levels have been observed up to about 3 MeV in excitation, in no cases have spin-parity assignments been made. In particular, the assumed 4 f ~~ character for the ground state of V 47 has been based largely on its observed fi + decay.On the other hand, there are now extensive theoretical predictions concerning V 47 as well as a wide range of other l/ 7/2 nuclei. For example, within the framework of a pure l/ 7/2 shell-model configuration, McCullen, Bay man, and Zamick 5 and Ginnochio 6 have successfully reproduced the excitation energies of the low-lying |"~ and |" states for many odd -A nuclei. However, their calculations generally predict the f ~ states arising from this configuration to be as much as 1 MeV higher in excitation than their observed locations. More recently, Federman and Talmi 7 have obtained good agreement for the low-lying states in the Ca isotopes by assuming a deformation of the l/ 7/2 orbital. Malik and Scholz 8 have also shown that the level schemes for a number of odd-A nuclei in this shell can be rather well described through the Northwestern University Materials Research Center. in terms of the Nilsson model with Coriolis coupling. According to this model, the relative locations of the |~~, f ~~, and f ~~ states may be a sensitive measure of the deformations in these nuclei. In this communication we wish to report on a study of the low-lying f"", f ~, and |~ states in V 47 arising from the (l/ 7/2 ) 3 proton configuration. Information concerning the locations of hole states is also presented.Levels in V 47 have been studied 9 by means of the reaction Ti 46 (He 3 ,^) using a 16.5-MeV He 3 beam from the University of Pennsylvania tandem accelerator. Deuteron spectra were recorded at angles ranging from 7° to 40° with a broad-range magnetic spectrograph and with an over-all resolution <20 keV. Figure 1 shows a partial deuteron spectrum measured at 30° for the transitions leading to the ground and first three excited states at 0.089, 0.147, and 0.258 MeV. The impurity group corresponding to the 1.663-MeV level in V 49 arose b...

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confidence: 99%

32−Ground State ofV47
Rosner
¹
,
Pullen
²

1967
Phys. Rev. Lett.
12
0
0
0
View full text Add to dashboard Cite

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Experimental and Theoretical Nuclear Level Densities

Huizenga

1972

Statistical Properties of Nuclei

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Prompt gamma-ray yields from proton bombardment of transition elements (Ti to Zn)

Demortier

1978

J. Radioanal. Chem.

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Level structure measurements with the (p, α) reaction

Cited by 41 publications

References 16 publications

32−Ground State ofV47
Rosner
¹
,
Pullen
²

1967
Phys. Rev. Lett.
12
0
0
0
View full text Add to dashboard Cite

32−Ground State ofV47
Rosner
¹
,
Pullen
²

1967
Phys. Rev. Lett.
12
0
0
0
View full text Add to dashboard Cite

Experimental and Theoretical Nuclear Level Densities

Prompt gamma-ray yields from proton bombardment of transition elements (Ti to Zn)

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Level structure measurements with the (p, α) reaction

Cited by 41 publications

References 16 publications

32−Ground State ofV47Rosner1, Pullen2 1967Phys. Rev. Lett.12000View full textAdd to dashboardCite

32−Ground State ofV47Rosner1, Pullen2 1967Phys. Rev. Lett.12000View full textAdd to dashboardCite

Experimental and Theoretical Nuclear Level Densities

Prompt gamma-ray yields from proton bombardment of transition elements (Ti to Zn)

Contact Info

Product

Resources

About

32−Ground State ofV47
Rosner
¹
,
Pullen
²

1967
Phys. Rev. Lett.
12
0
0
0
View full text Add to dashboard Cite

32−Ground State ofV47
Rosner
¹
,
Pullen
²

1967
Phys. Rev. Lett.
12
0
0
0
View full text Add to dashboard Cite