A search for the \(\gamma \) decay of the 2(2)(+) near-threshold resonance in C-14, located 142 keV above the neutron separation energy, was performed at the Argonne National Laboratory with the GRETINA ?-ray spectrometer coupled to the ORRUBA Si detectors. The sensitivity of the experiment was of the order of 2.6x10(-5). This is comparable to the gamma branch calculated by the Shell Model Embedded in the Continuum, which predicts a significant enhancement of the 2(2)(+) ? 0 transition probability, as a consequence of the collectivization of the near-threshold state.
\(\gamma \) Decay from the Near-neutron-threshold \(2^{+}\) State in \(^{14}\)C: A Probe of Collectivization Phenomena in Light Nuclei / G. Corbari, S. Bottoni, M. Ciemala, F.C.L. Crespi, S. Leoni, B. Fornal, R.V.F. Janssens, S.D. Pain, M. Siciliano, E. Albanese, A.D. Ayangeakaa, G. Benzoni, S. Carmichael, M. Carpenter, K. Chipps, N. Cieplicka, P. Copp, J. Forson, E. Gamba, L.W. Iskra, H. Jayatissa, F. Kondev, T. Lauritsen, B. Million, C. Müller-Gatermann, A. Palmisano, M. Polettini, C. Porzio, W. Reviol, N. Sensharma, D. Seweryniak, C. Ummel, O. Wieland, G. Wilson, S. Zhu, S. Ziliani (ACTA PHYSICA POLONICA. B, PROCEEDINGS SUPPLEMENT). - In: Extremes of the Nuclear Landscape / [a cura di] M. Matejska-Minda, P. Bednarczyk, M. Kmiecik. - [s.l] : Jagiellonian University, 2023. - pp. 4A33.1-4A33.4 (( convegno Zakopane Conference on Nuclear Physics : August 28th – September 4th tenutosi a Zakopane (Poland) nel 2022 [10.5506/APhysPolBSupp.16.4-A33].
\(\gamma \) Decay from the Near-neutron-threshold \(2^{+}\) State in \(^{14}\)C: A Probe of Collectivization Phenomena in Light Nuclei
G. Corbari
Primo
;S. BottoniSecondo
;F.C.L. Crespi;S. Leoni;E. Albanese;E. Gamba;M. Polettini;S. ZilianiUltimo
2023
Abstract
A search for the \(\gamma \) decay of the 2(2)(+) near-threshold resonance in C-14, located 142 keV above the neutron separation energy, was performed at the Argonne National Laboratory with the GRETINA ?-ray spectrometer coupled to the ORRUBA Si detectors. The sensitivity of the experiment was of the order of 2.6x10(-5). This is comparable to the gamma branch calculated by the Shell Model Embedded in the Continuum, which predicts a significant enhancement of the 2(2)(+) ? 0 transition probability, as a consequence of the collectivization of the near-threshold state.
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