Intermediate structure in the 239Pu(d, pf) reaction

Glässel, P.; Rösler, H.; Specht, H. J.

doi:10.1016/0375-9474(76)90105-6

Cited by 49 publications

(14 citation statements)

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“…These results are interpreted together with the 234 U results obtained by Blons et al [12] as a consequence of the hyperdeformed states lying in the third well of the fission barrier. Information on the spins of the above transmission resonances excited in the ͑d, p͒ reaction has been obtained from comparing the measured fission-fragment angular distributions with the results of PWBA calculations [15]. In PWBA calculations, the m-state population amplitudes with respect to the recoil axis are all zero except for m 0.…”

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Experimental Evidence for Hyperdeformed States in U Isotopes

et al. 1998

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Experimental Evidence for Hyperdeformed States in U IsotopesKrasznahorkayGeneral rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal Take down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. VOLUME 80, NUMBER 10 P H Y S I C A L R E V I E W L E T T E R S 9 MARCH 1998 Experimental Evidence for Hyperdeformed States in U Isotopes

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“…Following Glässel et al [15] the vibrational states of a nucleus having a complex potential energy surface (as discussed above) might be classified as class I, class II, or class III states, depending on whether the amplitude is the greatest in the ground state, the second, or the third minimum, respectively.…”

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Experimental Evidence for Hyperdeformed States in U Isotopes

et al. 1998

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“…6. Subsequent studies of this system have been carried out using a magnetic spectrometer to register the energy of the outgoing proton [16][17][18]. A substantially better excitation energy resolution E X ⇠ 5 keV, can be achieved using this technique.…”

Section: Vibrational Resonancesmentioning

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Opportunities for detailed fission studies using light charged particle reactions

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2020

EPJ Web Conf.

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Since its discovery in 1939, the nuclear fission process has provided much insight into the behavior of nuclei under many different conditions. As part of the nuclear chain reaction, the fission process has had a profound impact on modern society and it has consequently attracted much attention to the field of nuclear physics. In this talk, I will argue that the time is ripe for a resumption of studies of the fission process induced by light charged particle reactions. Although fission can be induced in heavy nuclei by several means, in some cases these methods suffer from the complication that fission can occur at several points during the decay chain thus mixing up contributions from different excitation energies. Using instead light charged particle reactions to excite the nuclei in question, the precise excitation energy from which fission takes place, can be determined. In fact, a number of such studies were carried out previously, and a first set of results on fission barrier heights, mass, energy and angular distributions were obtained. Applying detection techniques developed over the last decades will allow researchers to obtain detailed, high-quality data from which to probe and refine our present understanding of the process. Based on these observations, I suggest that substantial advances in the study of this process can be achieved by using simple light charged particle reactions.

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“…The same reaction was later investigated with the Q3D magnetic spectrograph at the Munich tandem accelerator, whereby an energy resolution of 3 keV (FWHM) in Ref. [326] or ∼7 keV in Ref. [327] was achieved.…”

Section: Fission Studies By Means Of Few-and Multinucleon Transfer Rementioning

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Nuclear fission: a review of experimental advances and phenomenology

2017

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In the last two decades, through technological, experimental and theoretical advances, the situation in experimental fission studies has changed dramatically. With the use of advanced production and detection techniques both much more detailed and precise information can now be obtained for the traditional regions of fission research and, crucially, new regions of nuclei have become routinely accessible for fission studies. This work first of all reviews the recent developments in experimental fission techniques, in particular the resurgence of transfer-induced fission reactions with light and heavy ions, the emerging use of inverse-kinematic approaches, both at Coulomb and relativistic energies, and of fission studies with radioactive beams. The emphasis on the fission-fragment mass and charge distributions will be made in this work, though some of the other fission observables, such as prompt neutron and γ-ray emission will also be reviewed. A particular attention will be given to the low-energy fission in the so far scarcely explored nuclei in the very neutron-deficient lead region. They recently became the focus for several complementary experimental studies, such as β-delayed fission with radioactive beams at ISOLDE(CERN), Coulex-induced fission of relativistic secondary beams at FRS(GSI), and several prompt fusion-fission studies. The synergy of these approaches allows a unique insight in the new region of asymmetric fission around [Formula: see text]Hg, recently discovered at ISOLDE. Recent extensive theoretical efforts in this region will also be outlined. The unprecedented high-quality data for fission fragments, completely identified in Z and A, by means of reactions in inverse kinematics at FRS(GSI) and VAMOS(GANIL) will be also reviewed. These experiments explored an extended range of mercury-to-californium elements, spanning from the neutron-deficient to neutron-rich nuclides, and covering both asymmetric, symmetric and transitional fission regions. Some aspects of heavy-ion induced fusion-fission and quasifission reactions will be also discussed, which reveal their dynamical features, such as the fission time scale. The crucial role of the multi-chance fission, probed by means of multinucleon-transfer induced fission reactions, will be highlighted. The review will conclude with the discussion of the new experimental fission facilities which are presently being brought into operation, along with promising 'next-generation' fission approaches, which might become available within the next decade.

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Intermediate structure in the 239Pu(d, pf) reaction

Cited by 49 publications

References 23 publications

Experimental Evidence for Hyperdeformed States in U Isotopes

Experimental Evidence for Hyperdeformed States in U Isotopes

Opportunities for detailed fission studies using light charged particle reactions

Nuclear fission: a review of experimental advances and phenomenology

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