Fission decay of isoscalar giant resonances excited in 172 MeV α scattering from 238U

Morsch, H. P.; Rogge, M.; Decowski, P.; Machner, H.; Sükösd, Cs.; David, Peter; Debrus, J.; Hartfiel, J.; Janszen, H.; Schulze, Julian

doi:10.1016/0370-2693(82)90678-5

Cited by 15 publications

(6 citation statements)

References 11 publications

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“…The results of the experiments investigating the fission decay of the giant quadrupole resonance (GQR) are controversial [22,25,[37][38][39][40][41][42]. The measured fission probabilities range from 4% [37] in a 238U (~, ~'f) experiment to 40% [381 in an inclusive 238U(e-, f) experiment. Under the assumption that n.r.…”

Section: Discussionmentioning

confidence: 99%

Nuclear excitation and prompt fission in muonic238U

Hänscheid

David

Folger

et al. 1992

Z. Physik A - Hadrons and Nuclei

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A study of muonic 238U has been performed in a combined (p-, 7f) and (#-, 7t') coincidence experiment to investigate the role of non-radiative transitions and their fission probabilities. An augmentation of the outer fission barrier of AEb = (0.6___ 0.1) MeV due to the presence of the muon is deduced. A significant contribution to the prompt fission yield not only results from the (2p~ Is) and (3d-+ l s) non-radiative transitions, but also from other radiationless transitions. Specifically, the measured fission probabilities of the transitions (2p-~ls), (3 d ---, l s), and (3p--*ls) are (1.5• (5.7 • 1.7)%, and (5.3 • 1.9)%, respectively.

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Section: Discussionmentioning

confidence: 99%

Nuclear excitation and prompt fission in muonic238U

Hänscheid

David

Folger

et al. 1992

Z. Physik A - Hadrons and Nuclei

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“…Few experimental data for Py(Ex) exist for excitation energies above the threshold for second chance fission B,y of 238U [7,11,19,21,22]. Only in Ref.…”

Section: Discussionmentioning

confidence: 99%

“…some experimental results for the anisotropy of fission fragment angular distributions for excitation energies around the fission barrier as measured in 238U(e, e'f) reactions in various experimental conditions are listed. Above the B,:-threshold the anisotropy rises slightly and stays constant up to the next threshold Bz,: at around 18 MeV[7]. Above the B,:-threshold the anisotropy rises slightly and stays constant up to the next threshold Bz,: at around 18 MeV[7].…”

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confidence: 90%

“…sub barrier resonances [1], or like the fission decay properties of the giant resonances [2]. [4,5,6,7]. Only few results of fission probabilities are published for excitation energies beyond B,I and these results pertain to different nuclei, investigated with different reactions, e.g.…”

Section: Introductionmentioning

confidence: 99%

“…The anisotropy decreases with the excitation energy increasing from the fission barrier up to the threshold for second chance fission B,I[7,[15][16][17][18]. The anisotropy decreases with the excitation energy increasing from the fission barrier up to the threshold for second chance fission B,I[7,[15][16][17][18].…”

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confidence: 99%

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Study of the reaction238U (?, ??f) atE ?=480 MeV

David

Hartfiel

Janszen

et al. 1987

Z. Physik A - Atomic Nuclei

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Dedicated to Professor Theo Mayer-Kuckuk on the occasion of his 60th birthdayThe excitation function of the fission probability PI(E~) for 238U has been measured in the reaction 238U(c~, ~'f) at 480 MeV bombarding energy. The reaction mechanism of this reaction is discussed for excitation energies below B,I, the threshold for second chance fission, and above B,I up to Ex = 37 MeV. In comparing with results from fission induced by photons and by particle transfer reactions the (~, c~'f) reaction gives too low values for the fission probability PI at excitation energies well above B,s. The role of the quasi-elastic knock-out process in this reaction is discussed.

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Collective excitations in deformed nuclei

Iudice

2000

Riv. Nuovo Cim.

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Fission decay of isoscalar giant resonances excited in 172 MeV α scattering from 238U

Cited by 15 publications

References 11 publications

Nuclear excitation and prompt fission in muonic238U

Nuclear excitation and prompt fission in muonic238U

Study of the reaction238U (?, ??f) atE ?=480 MeV

Collective excitations in deformed nuclei

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