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PRODUCTION AND STUDY OF NEUTRON-RICH NUCLEI USING THE LICORNE DIRECTIONAL NEUTRON SOURCE

Wilson, JN, Lebois, M, Qi, L, Amador-Celdran, P, Bleuel, D, Briz, JA, Carroll, R, Catford, Wilton, De Witte, H, Doherty, D , Eloirdi, R, Georgiev, G, Gottardo, A, Goasduff, A, Hadynska-Klek, K, Hauschild, K, Hess, M, Ingeberg, V, Konstantinopoulos, T, Ljungvall, J, Lopez-Martens, A, Lorusso, G, Lozeva, R, Lutter, R, Marini, P, Matea, I, Materna, T, Mathieu, L, Oberstedt, A, Oberstedt, S, Panebianco, S, Podolyak, Zsolt, Porta, D, Regan, Patrick, Reiter, P, Rezynkina, K, Rose, SJ, Sahin, E, Seidlitz, M, Shearman, Robert, Siebeck, B, Siem, S, Smith, AG, Tveten, GM, Verney, D, Warr, N, Zeiser, F and Zielinska, M (2017) PRODUCTION AND STUDY OF NEUTRON-RICH NUCLEI USING THE LICORNE DIRECTIONAL NEUTRON SOURCE In: Conference on Nuclear Physics “Extremes of the Nuclear Landscape”, 2016-08-28 - 2016-09-04, Zakopane, Poland.

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Abstract

We have recently successfully demonstrated a new technique for production and study of many of the most exotic neutron-rich nuclei at moderate spins. LICORNE, a newly developed directional inverse-kinematic fast neutron source at the IPN Orsay, was coupled to the MINIBALL high resolution -ray spectrometer to study nuclei the furthest from stability using the 238U(n; f) reaction. This reaction and 232Th(n; f) are the most neutron-rich fission production mechanisms achievable and can be used to simultaneously populate hundreds of neutron-rich nuclei up to spins of 16 ~. High selectivity in the experiment was achieved via triple -ray coincidences and the use of a 400 ns period pulsed neutron beam, a technique which is unavailable to other population mechanisms such as 235U(nth; f) and 252Cf(SF). The pulsing allows time correlations to be exploited to separate delayed rays from isomeric states in the hundreds of nuclei produced, which are then used to cleanly select a particular nucleus and its exotic binary partners. In the recent experiment, several physics cases are simultaneously addressed such as shape coexistence, the evolution of shell closures far from stability, and the spectroscopy of nuclei in the r-process path near N = 82. Preliminary physics results on anomalies in the 238U(n; f) fission yields and the structure of the 138Te and 100Sr nuclei will soon be published. A future project, -ball, to couple LICORNE with a hybrid escape-suppressed spectrometer to refine further the technique and achieve a large increase in the observational limit is discussed.

Item Type: Conference or Workshop Item (Conference Paper)
Subjects : Physics
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Wilson, JNUNSPECIFIEDUNSPECIFIED
Lebois, MUNSPECIFIEDUNSPECIFIED
Qi, LUNSPECIFIEDUNSPECIFIED
Amador-Celdran, PUNSPECIFIEDUNSPECIFIED
Bleuel, DUNSPECIFIEDUNSPECIFIED
Briz, JAUNSPECIFIEDUNSPECIFIED
Carroll, RUNSPECIFIEDUNSPECIFIED
Catford, WiltonW.Catford@surrey.ac.ukUNSPECIFIED
De Witte, HUNSPECIFIEDUNSPECIFIED
Doherty, DUNSPECIFIEDUNSPECIFIED
Eloirdi, RUNSPECIFIEDUNSPECIFIED
Georgiev, GUNSPECIFIEDUNSPECIFIED
Gottardo, AUNSPECIFIEDUNSPECIFIED
Goasduff, AUNSPECIFIEDUNSPECIFIED
Hadynska-Klek, KUNSPECIFIEDUNSPECIFIED
Hauschild, KUNSPECIFIEDUNSPECIFIED
Hess, MUNSPECIFIEDUNSPECIFIED
Ingeberg, VUNSPECIFIEDUNSPECIFIED
Konstantinopoulos, TUNSPECIFIEDUNSPECIFIED
Ljungvall, JUNSPECIFIEDUNSPECIFIED
Lopez-Martens, AUNSPECIFIEDUNSPECIFIED
Lorusso, GUNSPECIFIEDUNSPECIFIED
Lozeva, RUNSPECIFIEDUNSPECIFIED
Lutter, RUNSPECIFIEDUNSPECIFIED
Marini, PUNSPECIFIEDUNSPECIFIED
Matea, IUNSPECIFIEDUNSPECIFIED
Materna, TUNSPECIFIEDUNSPECIFIED
Mathieu, LUNSPECIFIEDUNSPECIFIED
Oberstedt, AUNSPECIFIEDUNSPECIFIED
Oberstedt, SUNSPECIFIEDUNSPECIFIED
Panebianco, SUNSPECIFIEDUNSPECIFIED
Podolyak, ZsoltZ.Podolyak@surrey.ac.ukUNSPECIFIED
Porta, DUNSPECIFIEDUNSPECIFIED
Regan, PatrickP.Regan@surrey.ac.ukUNSPECIFIED
Reiter, PUNSPECIFIEDUNSPECIFIED
Rezynkina, KUNSPECIFIEDUNSPECIFIED
Rose, SJUNSPECIFIEDUNSPECIFIED
Sahin, EUNSPECIFIEDUNSPECIFIED
Seidlitz, MUNSPECIFIEDUNSPECIFIED
Shearman, Robertr.shearman@surrey.ac.ukUNSPECIFIED
Siebeck, BUNSPECIFIEDUNSPECIFIED
Siem, SUNSPECIFIEDUNSPECIFIED
Smith, AGUNSPECIFIEDUNSPECIFIED
Tveten, GMUNSPECIFIEDUNSPECIFIED
Verney, DUNSPECIFIEDUNSPECIFIED
Warr, NUNSPECIFIEDUNSPECIFIED
Zeiser, FUNSPECIFIEDUNSPECIFIED
Zielinska, MUNSPECIFIEDUNSPECIFIED
Date : March 2017
Identification Number : 10.5506/APhysPolB.48.395
Copyright Disclaimer : Copyright The Authors, 2016. Published under the conditions of Creative Common License, CC-BY 4.0.
Contributors :
ContributionNameEmailORCID
UNSPECIFIEDJagiellonian University, UNSPECIFIEDUNSPECIFIED
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 26 Apr 2017 17:07
Last Modified : 11 Jul 2017 13:14
URI: http://epubs.surrey.ac.uk/id/eprint/814045

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