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Artikel ; Online: Accelerated beams of radioactive nuclei

Gelletly W.

Europhysics News, Vol 31, Iss 6, Pp 9-

2008 Band 11

Schlagwörter	Physics ; QC1-999 ; Science ; Q ; DOAJ:Physics (General) ; DOAJ:Physics and Astronomy
Sprache	Englisch
Erscheinungsdatum	2008-10-01T00:00:00Z
Verlag	EDP Sciences
Dokumenttyp	Artikel ; Online
Datenquelle	BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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Buch: The Daresbury nuclear facility

Gelletly, W

now and ih the future

(Technical memorandum / Daresbury Laboratory, Science Research Council : DL NUC ; 69E)

1990

Verfasserangabe	W. Gelletly
Serientitel	Technical memorandum / Daresbury Laboratory, Science Research Council : DL NUC ; 69E
Sprache	Englisch
Umfang	22 Sp., 24 S., graph. Darst.
Verlag	Science and Engineering Research Council
Erscheinungsort	Daresbury
Dokumenttyp	Buch
Datenquelle	Katalog der Technische Informationsbibliothek Hannover

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Buch: The observation of 84 Mo

Gelletly, W

(Preprint / Daresbury Laboratory, Science Research Council : DL NUC P ; 306 E)

1990

Verfasserangabe	by W. Gelletly
Serientitel	Preprint / Daresbury Laboratory, Science Research Council : DL NUC P ; 306 E
Sprache	Englisch
Umfang	9 Doppels., [1] Bl., graph. Darst.
Verlag	Daresbury Laboratory, Science Research Council
Erscheinungsort	Daresbury, Warrington
Dokumenttyp	Buch
Datenquelle	Katalog der Technische Informationsbibliothek Hannover

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Artikel ; Online: Updated Summation Model: An Improved Agreement with the Daya Bay Antineutrino Fluxes.

Estienne, M / Fallot, M / Algora, A / Briz-Monago, J / Bui, V M / Cormon, S / Gelletly, W / Giot, L / Guadilla, V / Jordan, D / Le Meur, L / Porta, A / Rice, S / Rubio, B / Taín, J L / Valencia, E / Zakari-Issoufou, A-A

Physical review letters

2015 Band 123, Heft 2, Seite(n) 22502

Abstract: A new summation method model of the reactor antineutrino energy spectrum is presented. It is updated with the most recent evaluated decay databases and with our total absorption gamma-ray spectroscopy measurements performed during the last decade. For ... ...

Abstract	A new summation method model of the reactor antineutrino energy spectrum is presented. It is updated with the most recent evaluated decay databases and with our total absorption gamma-ray spectroscopy measurements performed during the last decade. For the first time, the spectral measurements from the Daya Bay experiment are compared with the antineutrino energy spectrum computed with the updated summation method without any renormalization. The results exhibit a better agreement than is obtained with the Huber-Mueller model in the 2-5 MeV range, the region that dominates the detected flux. A systematic trend is found in which the antineutrino flux computed with the summation model decreases with the inclusion of more pandemonium-free data. The calculated flux obtained now lies only 1.9% above that detected in the Daya Bay experiment, a value that may be reduced with forthcoming new pandemonium-free data, leaving less room for a reactor anomaly. Eventually, the new predictions of individual antineutrino spectra for the ^{235}U, ^{239}Pu, ^{241}Pu, and ^{238}U are used to compute the dependence of the reactor antineutrino spectral shape on the fission fractions.
Sprache	Englisch
Erscheinungsdatum	2015-09-30
Erscheinungsland	United States
Dokumenttyp	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.123.022502
Datenquelle	MEDical Literature Analysis and Retrieval System OnLINE

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Buch ; Konferenzbeitrag: The study of nuclei far from stability

Gelletly, W

proceedings

(Report / Daresbury Laboratory, Science Research Council : DL/NUC/R ; 20)

1980

Veranstaltung/Kongress	Daresbury Study Weekend (1979.09.22-23, Daresbury)
Verfasserangabe	W. Gelletly [Hrsg.]
Serientitel	Report / Daresbury Laboratory, Science Research Council : DL/NUC/R ; 20
Umfang	113 S
Erscheinungsort	Daresbury, Warrington
Dokumenttyp	Buch ; Konferenzbeitrag
Datenquelle	Katalog der Technische Informationsbibliothek Hannover

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Artikel ; Online: Large Impact of the Decay of Niobium Isomers on the Reactor ν[over ¯]_{e} Summation Calculations.

Guadilla, V / Algora, A / Tain, J L / Estienne, M / Fallot, M / Sonzogni, A A / Agramunt, J / Äystö, J / Briz, J A / Cucoanes, A / Eronen, T / Fraile, L M / Ganioğlu, E / Gelletly, W / Gorelov, D / Hakala, J / Jokinen, A / Jordan, D / Kankainen, A /

Kolhinen, V / Koponen, J / Lebois, M / Le Meur, L / Martinez, T / Monserrate, M / Montaner-Pizá, A / Moore, I / Nácher, E / Orrigo, S E A / Penttilä, H / Pohjalainen, I / Porta, A / Reinikainen, J / Reponen, M / Rinta-Antila, S / Rubio, B / Rytkönen, K / Shiba, T / Sonnenschein, V / Valencia, E / Vedia, V / Voss, A / Wilson, J N / Zakari-Issoufou, A-A

Physical review letters

2019 Band 122, Heft 4, Seite(n) 42502

Abstract: Even mass neutron-rich niobium isotopes are among the principal contributors to the reactor antineutrino energy spectrum. They are also among the most challenging to measure due to the refractory nature of niobium, and because they exhibit isomeric ... ...

Abstract	Even mass neutron-rich niobium isotopes are among the principal contributors to the reactor antineutrino energy spectrum. They are also among the most challenging to measure due to the refractory nature of niobium, and because they exhibit isomeric states lying very close in energy. The β-intensity distributions of ^{100gs,100m}Nb and ^{102gs,102m}Nb β decays have been determined using the total absorption γ-ray spectroscopy technique. The measurements were performed at the upgraded Ion Guide Isotope Separator On-Line facility at the University of Jyväskylä. Here, the double Penning trap system JYFLTRAP was employed to disentangle the β decay of the isomeric states. The new data obtained in this challenging measurement have a large impact in antineutrino summation calculations. For the first time the discrepancy between the summation model and the reactor antineutrino measurements in the region of the shape distortion has been reduced.
Sprache	Englisch
Erscheinungsdatum	2019-02-28
Erscheinungsland	United States
Dokumenttyp	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.122.042502
Datenquelle	MEDical Literature Analysis and Retrieval System OnLINE

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Artikel ; Online: Competition between Allowed and First-Forbidden β Decay: The Case of ^{208}Hg→^{208}Tl.

Carroll, R J / Podolyák, Zs / Berry, T / Grawe, H / Alexander, T / Andreyev, A N / Ansari, S / Borge, M J G / Brunet, M / Creswell, J R / Fraile, L M / Fahlander, C / Fynbo, H O U / Gamba, E R / Gelletly, W / Gerst, R-B / Górska, M / Gredley, A / Greenlees, P T /

Harkness-Brennan, L J / Huyse, M / Judge, S M / Judson, D S / Konki, J / Kurcewicz, J / Kuti, I / Lalkovski, S / Lazarus, I H / Lică, R / Lund, M / Madurga, M / Marginean, N / Marginean, R / Marroquin, I / Mihai, C / Mihai, R E / Nácher, E / Negret, A / Nita, C / Pascu, S / Page, R D / Patel, Z / Perea, A / Phrompao, J / Piersa, M / Pucknell, V / Rahkila, P / Rapisarda, E / Regan, P H / Rotaru, F / Rudigier, M / Shand, C M / Shearman, R / Stegemann, S / Stora, T / Sotty, Ch / Tengblad, O / Van Duppen, P / Vedia, V / Wadsworth, R / Walker, P M / Warr, N / Wearing, F / De Witte, H

Physical review letters

2020 Band 125, Heft 19, Seite(n) 192501

Abstract: The β decay of ^{208}Hg into the one-proton hole, one neutron-particle _{81}^{208}Tl_{127} nucleus was investigated at CERN-ISOLDE. Shell-model calculations describe well the level scheme deduced, validating the proton-neutron interactions used, with ... ...

Abstract	The β decay of ^{208}Hg into the one-proton hole, one neutron-particle _{81}^{208}Tl_{127} nucleus was investigated at CERN-ISOLDE. Shell-model calculations describe well the level scheme deduced, validating the proton-neutron interactions used, with implications for the whole of the N>126, Z<82 quadrant of neutron-rich nuclei. While both negative and positive parity states with spin 0 and 1 are expected within the Q_{β} window, only three negative parity states are populated directly in the β decay. The data provide a unique test of the competition between allowed Gamow-Teller and Fermi, and first-forbidden β decays, essential for the understanding of the nucleosynthesis of heavy nuclei in the rapid neutron capture process. Furthermore, the observation of the parity changing 0^{+}→0^{-}β decay where the daughter state is core excited is unique, and can provide information on mesonic corrections of effective operators.
Sprache	Englisch
Erscheinungsdatum	2020-11-20
Erscheinungsland	United States
Dokumenttyp	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.125.192501
Datenquelle	MEDical Literature Analysis and Retrieval System OnLINE

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Artikel ; Online: Observation of the β-delayed γ-proton decay of (56)Zn and its impact on the Gamow-Teller strength evaluation.

Orrigo, S E A / Rubio, B / Fujita, Y / Blank, B / Gelletly, W / Agramunt, J / Algora, A / Ascher, P / Bilgier, B / Cáceres, L / Cakirli, R B / Fujita, H / Ganioğlu, E / Gerbaux, M / Giovinazzo, J / Grévy, S / Kamalou, O / Kozer, H C / Kucuk, L /

Kurtukian-Nieto, T / Molina, F / Popescu, L / Rogers, A M / Susoy, G / Stodel, C / Suzuki, T / Tamii, A / Thomas, J C

Physical review letters

2014 Band 112, Heft 22, Seite(n) 222501

Abstract: We report the observation of a very exotic decay mode at the proton drip line, the β-delayed γ-proton decay, clearly seen in the β decay of the T_{z}=-2 nucleus ^{56}Zn. Three γ-proton sequences have been observed after the β decay. Here this decay mode, ...

Abstract	We report the observation of a very exotic decay mode at the proton drip line, the β-delayed γ-proton decay, clearly seen in the β decay of the T_{z}=-2 nucleus ^{56}Zn. Three γ-proton sequences have been observed after the β decay. Here this decay mode, already observed in the sd shell, is seen for the first time in the fp shell. Both γ and proton decays have been taken into account in the estimation of the Fermi and Gamow-Teller strengths. Evidence for fragmentation of the Fermi strength due to strong isospin mixing is found.
Sprache	Englisch
Erscheinungsdatum	2014-06-06
Erscheinungsland	United States
Dokumenttyp	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.112.222501
Datenquelle	MEDical Literature Analysis and Retrieval System OnLINE

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Artikel ; Online: Two-Proton Radioactivity of ^{67}Kr.

Goigoux, T / Ascher, P / Blank, B / Gerbaux, M / Giovinazzo, J / Grévy, S / Kurtukian Nieto, T / Magron, C / Doornenbal, P / Kiss, G G / Nishimura, S / Söderström, P-A / Phong, V H / Wu, J / Ahn, D S / Fukuda, N / Inabe, N / Kubo, T / Kubono, S /

Sakurai, H / Shimizu, Y / Sumikama, T / Suzuki, H / Takeda, H / Agramunt, J / Algora, A / Guadilla, V / Montaner-Piza, A / Morales, A I / Orrigo, S E A / Rubio, B / Fujita, Y / Tanaka, M / Gelletly, W / Aguilera, P / Molina, F / Diel, F / Lubos, D / de Angelis, G / Napoli, D / Borcea, C / Boso, A / Cakirli, R B / Ganioglu, E / Chiba, J / Nishimura, D / Oikawa, H / Takei, Y / Yagi, S / Wimmer, K / de France, G / Go, S / Brown, B A

Physical review letters

2016 Band 117, Heft 16, Seite(n) 162501

Abstract: In an experiment with the BigRIPS separator at the RIKEN Nishina Center, we observed two-proton (2p) emission from ^{67}Kr. At the same time, no evidence for 2p emission of ^{59}Ge and ^{63}Se, two other potential candidates for this exotic radioactivity, ...

Abstract	In an experiment with the BigRIPS separator at the RIKEN Nishina Center, we observed two-proton (2p) emission from ^{67}Kr. At the same time, no evidence for 2p emission of ^{59}Ge and ^{63}Se, two other potential candidates for this exotic radioactivity, could be observed. This observation is in line with Q value predictions which pointed to ^{67}Kr as being the best new candidate among the three for two-proton radioactivity. ^{67}Kr is only the fourth 2p ground-state emitter to be observed with a half-life of the order of a few milliseconds. The decay energy was determined to be 1690(17) keV, the 2p emission branching ratio is 37(14)%, and the half-life of ^{67}Kr is 7.4(30) ms.
Sprache	Englisch
Erscheinungsdatum	2016-10-14
Erscheinungsland	United States
Dokumenttyp	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.117.162501
Datenquelle	MEDical Literature Analysis and Retrieval System OnLINE

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Artikel ; Online: Enhanced γ-Ray Emission from Neutron Unbound States Populated in β Decay.

Tain, J L / Valencia, E / Algora, A / Agramunt, J / Rubio, B / Rice, S / Gelletly, W / Regan, P / Zakari-Issoufou, A-A / Fallot, M / Porta, A / Rissanen, J / Eronen, T / Äystö, J / Batist, L / Bowry, M / Bui, V M / Caballero-Folch, R / Cano-Ott, D /

Elomaa, V-V / Estevez, E / Farrelly, G F / Garcia, A R / Gomez-Hornillos, B / Gorlychev, V / Hakala, J / Jordan, M D / Jokinen, A / Kolhinen, V S / Kondev, F G / Martínez, T / Mendoza, E / Moore, I / Penttilä, H / Podolyák, Zs / Reponen, M / Sonnenschein, V / Sonzogni, A A

Physical review letters

2015 Band 115, Heft 6, Seite(n) 62502

Abstract: Total absorption spectroscopy is used to investigate the β-decay intensity to states above the neutron separation energy followed by γ-ray emission in (87,88)Br and (94)Rb. Accurate results are obtained thanks to a careful control of systematic errors. ... ...

Abstract	Total absorption spectroscopy is used to investigate the β-decay intensity to states above the neutron separation energy followed by γ-ray emission in (87,88)Br and (94)Rb. Accurate results are obtained thanks to a careful control of systematic errors. An unexpectedly large γ intensity is observed in all three cases extending well beyond the excitation energy region where neutron penetration is hindered by low neutron energy. The γ branching as a function of excitation energy is compared to Hauser-Feshbach model calculations. For (87)Br and (88)Br the γ branching reaches 57% and 20%, respectively, and could be explained as a nuclear structure effect. Some of the states populated in the daughter can only decay through the emission of a large orbital angular momentum neutron with a strongly reduced barrier penetrability. In the case of neutron-rich (94)Rb the observed 4.5% branching is much larger than the calculations performed with standard nuclear statistical model parameters, even after proper correction for fluctuation effects on individual transition widths. The difference can be reconciled by introducing an enhancement of 1 order of magnitude in the photon strength to neutron strength ratio. An increase in the photon strength function of such magnitude for very neutron-rich nuclei, if it proves to be correct, leads to a similar increase in the (n,γ) cross section that would have an impact on r process abundance calculations.
Sprache	Englisch
Erscheinungsdatum	2015-08-07
Erscheinungsland	United States
Dokumenttyp	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.115.062502
Datenquelle	MEDical Literature Analysis and Retrieval System OnLINE

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