Rotation of the compound nucleus 236U∗ in the fission reaction 235U(<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:mi>n</mml:mi><mml:mo>,</mml:mo><mml:mi>f</mml:mi></mml:math>) induced by cold polarised neutrons

Goennenwein, F.; Mutterer, M.; Gagarski, A. M.; Guseva, I. S.; Petrov, G. A.; Sokolov, V. E.; Zavarukhina, T. A.; Gusev, Yu.; Kalben, J. von; Nesvizhevski, V.; Söldner, T.

doi:10.1016/j.physletb.2007.06.057

Cited by 56 publications

(5 citation statements)

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“…Extensive work led primarily by Soviet/Russian groups over several decades discovered many parity-odd and parity-even asymmetries in polarized neutron-induced fission resonances in several fissionable nuclei [104][105][106]. Later work in this field shifted mainly to measurement of formally T-odd correlations in fission product angular distributions to try to understand subtle features of fission dynamics by looking at various angular correlations in both binary and ternary fission [107][108][109][110][111].…”

Section: Future Opportunities Using Epithermal Neutronsmentioning

confidence: 99%

Searches for Exotic Interactions Using Neutrons

2021

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Slow neutrons possess several advantageous properties which make them useful probes for a variety of exotic interactions, including some that can form at least some components of the dark matter of interest for this issue of Symmetry. We discuss the relevant neutron properties, describe some of the recent work that has been done along these lines using neutron experiments mainly with cold and ultra-cold neutrons, and outline some interesting and exciting opportunities which can be pursued using resonant epithermal neutron interactions in heavy nuclei.

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Section: Future Opportunities Using Epithermal Neutronsmentioning

confidence: 99%

Searches for Exotic Interactions Using Neutrons

2021

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“…However, this hypothesis was met with a scepticism based on naive semiclassical interpretation of spin-orbit interaction. It was noted in [17] [18]. However, another semiclassical model for the source of this asymmetry was proposed based on the rotation of the fissioning nucleus.…”

Section: Scheme Of Measurement Of Small (∼ 10mentioning

confidence: 99%

“…During the last decade new angular correlations, known as T (formal, not real, violation of Time reversal invariance) and R (Rotation) effects [16][17][18][19][20], have been found in fission of nuclei 233 U and 235 U by slow polarized neutrons. Formally both angular correlations are odd with respect to time reverse (T-odd), but they have nothing to do with violation of fundamental time reversal invariance.…”

Section: Introductionmentioning

confidence: 99%

Fission via compound states andJ^πKA. Bohr's channels: what we can learn from recent studies with slow neutrons

Barabanov

Furman

2012

EPJ Web of Conferences

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Abstract. Last data on angular correlations of fission fragments from slow (s-wave) neutron induced binary fission of spin-aligned nuclei 235 U are discussed in the context of J π K A. Bohrs channels. Special attention is paid to K = 0 channel. Reasons for its suppression are specified for compound nucleus states of negative parity. A brief overview of recent data on T-odd angular correlations in ternary and binary (with emission of a third particle, a neutron or γ-quantum) fission induced by slow polarized neutrons is presented. On the basis of the developed theoretical approach it is shown that a valuable information on J π K fission channels at scission point can be inferred from these T-odd angular correlations.

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“…The reason is related to the significant influence of the interaction between fission products in final states and as well the interference of reaction amplitudes of neighboring compound states. The result of these investigations caused the discovery of T-odd asymmetries of the TRI and ROT types in the ternary fission of a number of actinide nuclei [4][5][6]. Both effects (TRI, ROT), being formally T-odd, currently are not considered as violating the time reversal invariance.…”

Section: Introductionmentioning

confidence: 99%

An instrument for measuring T-odd asymmetries in the fission of heavy nuclei

Berikov¹,

Hutanu²,

Kopatch³

et al. 2020

J. Inst.

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We describe an experimental setup used to measure the T-odd asymmetry effects for prompt fission neutrons and γ-rays in binary fission of some heavy nuclei induced by polarized neutrons with resonance energy. The overall setup as well as the details of the design and performance of the key components like fission fragment detectors, neutron and γ detectors, and the electronics used in the data acquisition and processing system are presented. The experimental setup on beam line POLI of the FRM II reactor (Garching, Germany), as well as the neutron beam characteristics, polarization measurements are described, too.

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Rotation of the compound nucleus 236U∗ in the fission reaction 235U(n,f) induced by cold polarised neutrons

Cited by 56 publications

References 9 publications

Searches for Exotic Interactions Using Neutrons

Searches for Exotic Interactions Using Neutrons

Fission via compound states andJ^πKA. Bohr's channels: what we can learn from recent studies with slow neutrons

An instrument for measuring T-odd asymmetries in the fission of heavy nuclei

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Rotation of the compound nucleus 236U∗ in the fission reaction 235U(n,f) induced by cold polarised neutrons

Cited by 56 publications

References 9 publications

Searches for Exotic Interactions Using Neutrons

Searches for Exotic Interactions Using Neutrons

Fission via compound states andJπKA. Bohr's channels: what we can learn from recent studies with slow neutrons

An instrument for measuring T-odd asymmetries in the fission of heavy nuclei

Contact Info

Product

Resources

About

Fission via compound states andJ^πKA. Bohr's channels: what we can learn from recent studies with slow neutrons