Photographic Emulsions

Goldschmidt‐Clermont, Y.

doi:10.1146/annurev.ns.03.120153.001041

Cited by 24 publications

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“…Highlights of nuclear clustering in light nuclei studies obtained recently by means of the nuclear track emulsion (NTE) technique in the framework of the BECQU EREL Project [1] are gathered here. In spite of the fact that half a century passed since the NTE development it retains the status of an universal and inexpensive detector [2][3][4]. With an unsurpassed spatial resolution (about 0.5 µm) NTE of the BR-2 type provides a complete observation of tracks starting from fission fragments and down to relativistic particles.…”

Section: Introductionmentioning

confidence: 99%

Unstable nuclei in dissociation of light stable and radioactive nuclei in nuclear track emulsion

Artemenkov¹,

Zaitsev²,

Zarubin³

2017

Phys. Part. Nuclei

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A role of the unstable nuclei 6 Be, 8 Be and 9 B in the dissociation of relativistic nuclei 7,9 Be, 10 B and 10,11 C is under study on the basis of nuclear track emulsion exposed to secondary beams of the JINR Nuclotron. Contribution of the configuration 6 Be + n to the 7 Be nucleus structure is 8 ± 1% which is near the value for the configuration 6 Li + p. Distributions over the opening angle of α-particle pairs indicate to a simultaneous presence of virtual 8 Be g.s. and 8 Be 2 + states in the ground states of the 9 Be and 10 C nuclei. The core 9 B is manifested in the 10 C nucleus with a probability of 30 ± 4%. Selection of the 10 C "white" stars accompanied by 8 Be g.s. ( 9 B) leads to appearance in the excitation energy distribution of 2α2p "quartets" of the distinct peak with a maximum at 4.1 ± 0.3 MeV. 8 Be g.s. decays are presented in 24 ± 7% of 2He + 2H events of the 11 C coherent dissociation and 27 ± 11% of the 3He ones. The channel 9 B + H amounts 14 ± 3%.The 8 Be g.s. nucleus is manifested in the coherent dissociation 10 B → 2He + H with a probability of 25 ± 5% including 14 ± 3% of 9 B decays. A probability ratio of the mirror channels 9 B + n and 9 Be + p is estimated to be 6 ± 1.PACS numbers: 21.60. Gx, 29.40.Rg * Electronic address: zarubin@lhe.jinr.ru 1 arXiv:1607.08020v1 [nucl-ex]

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Section: Introductionmentioning

confidence: 99%

Unstable nuclei in dissociation of light stable and radioactive nuclei in nuclear track emulsion

Artemenkov¹,

Zaitsev²,

Zarubin³

2017

Phys. Part. Nuclei

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“…The autoradiography of uraninite and other radioactive substances was early demonstrated by M. , Crookes (1900), Pisani (1904), Step and Becke (1904), and Wherry (1908), the latter using an extensive collection of uranium minerals from localities in Pennsylvania. Yagoda (1946aYagoda ( , 1948Yagoda ( , 1949 and Bowie (1951) have described the modern technique of taking autoradiographs, and recent summaries are given by Bowie in Faul (1954), by Goldschmidt-Clermont (1953), and Beiser (1952). Localized areas of abnormaiiy high radioactivity in altered uraninite were found by autoradiography and are due to radiocolloid aggregates (Pb 206 S0 4 with RaS0 4 ) (Yagoda,.1946b).…”

Section: Systematic Mineralogy Of Uranium and Thoriummentioning

confidence: 99%

Systematic mineralogy of uranium and thorium

1958

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“…With unsurpassed spatial resolution NE provides complete observation of tracks starting from fission fragments and down to relativistic particles [1][2][3]. Unique opportunities of NTE deserve further use in fundamental and applied research in state-of-art accelerators and reactors, as well as with sources of radioactivity, including natural ones.…”

Section: Introductionmentioning

confidence: 99%

Recent applications of nuclear track emulsion

Маматкулов

Ambrožová²,

Artemenkov

et al. 2016

EPJ Web of Conferences

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Application of the nuclear track emulsion technique (NTE) in radioactivity and nuclear fission studies is discussed. It is suggested to use a HSP-1000 automated microscope for searching for a collinear cluster tri-partition of heavy nuclei implanted in NTE. Calibrations of α-particles and ion ranges in a novel NTE are carried out. Surface exposures of NTE samples to a Cf-252 source started. Planar events containing fragments and long-range α-particles as well as fragment triples only are studied. NTE samples are calibrated by ions Kr and Xe of energy of 1.2 and 3 A MeV. Use of the image recognition program "ImageJ" for obtaining characteristics of individual events and for events from the large scan area is presented. *

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Photographic Emulsions

Cited by 24 publications

References 0 publications

Unstable nuclei in dissociation of light stable and radioactive nuclei in nuclear track emulsion

Unstable nuclei in dissociation of light stable and radioactive nuclei in nuclear track emulsion

Systematic mineralogy of uranium and thorium

Recent applications of nuclear track emulsion

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