A study on the transition between seniority-type and collective excitations in 204Po and 206Po

Milena Stoyanova; Georgi Rainovski; Jan Jolie; Norbert Pietralla; Andrey Blazhev; Martin Djongolov; Arwin Esmaylzadeh; Lisa Gerhard; Kalin Gladnishki; Vasil Karayonchev; James Keatings; Ralph Kern; Diana Kocheva; Thorsten Kröll; Konstantin Mashtakov; Oliver Möller; Jean-Marc Régis; Marcus Scheck; Kerstin Schomacker; Jacqueline Sinclair; Chistian Sürder; Volker Werner; Johannes Wiederhold

doi:10.1051/epjconf/201819403002

A study on the transition between seniority-type and collective excitations in ²⁰⁴Po and ²⁰⁶Po

Milena Stoyanova, Georgi Rainovski, Jan Jolie, Norbert Pietralla, Andrey Blazhev, Martin Djongolov, Arwin Esmaylzadeh, Lisa Gerhard, Kalin Gladnishki, Vasil Karayonchev, James Keatings, Ralph Kern, Diana Kocheva, Thorsten Kröll, Konstantin Mashtakov, Oliver Möller, Jean-Marc Régis, Marcus Scheck, Kerstin Schomacker, Jacqueline SinclairChistian Sürder, Volker Werner, Johannes Wiederhold

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Abstract

Low-lying yrast states in ²⁰⁴Po and ²⁰⁶Po have been investigated by the γ-γ fast timing technique with LaBr₃(Ce) detectors. Excited states of these nuclei were populated in the ¹⁹⁷Au(¹¹B,4n) and the ¹⁹⁸Pt(¹²C,4n) fusion-evaporation reactions, respectively, at the FN-Tandem Facility at the University of Cologne. The lifetimes of the 4⁺₁ states in both nuclei were measured, along with an upper limit for the 2⁺₁ state in ²⁰⁴Po. The preliminary results are discussed in the scope of the systematic behavior of the transition strengths between yrast states in polonium isotopes.

Original language	English
Article number	03002
Number of pages	4
Journal	EPJ Web of Conferences
Volume	194
DOIs	https://doi.org/10.1051/epjconf/201819403002
Publication status	Published - 14 Nov 2018

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Stoyanova, M., Rainovski, G., Jolie, J., Pietralla, N., Blazhev, A., Djongolov, M., Esmaylzadeh, A., Gerhard, L., Gladnishki, K., Karayonchev, V., Keatings, J., Kern, R., Kocheva, D., Kröll, T., Mashtakov, K., Möller, O., Régis, J.-M., Scheck, M., Schomacker, K., ... Wiederhold, J. (2018). A study on the transition between seniority-type and collective excitations in ²⁰⁴Po and ²⁰⁶Po. EPJ Web of Conferences, 194, Article 03002. https://doi.org/10.1051/epjconf/201819403002

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title = "A study on the transition between seniority-type and collective excitations in 204Po and 206Po",

abstract = "Low-lying yrast states in 204Po and 206Po have been investigated by the γ-γ fast timing technique with LaBr3(Ce) detectors. Excited states of these nuclei were populated in the 197Au(11B,4n) and the 198Pt(12C,4n) fusion-evaporation reactions, respectively, at the FN-Tandem Facility at the University of Cologne. The lifetimes of the 4+1 states in both nuclei were measured, along with an upper limit for the 2+1 state in 204Po. The preliminary results are discussed in the scope of the systematic behavior of the transition strengths between yrast states in polonium isotopes.",

author = "Milena Stoyanova and Georgi Rainovski and Jan Jolie and Norbert Pietralla and Andrey Blazhev and Martin Djongolov and Arwin Esmaylzadeh and Lisa Gerhard and Kalin Gladnishki and Vasil Karayonchev and James Keatings and Ralph Kern and Diana Kocheva and Thorsten Kr{\"o}ll and Konstantin Mashtakov and Oliver M{\"o}ller and Jean-Marc R{\'e}gis and Marcus Scheck and Kerstin Schomacker and Jacqueline Sinclair and Chistian S{\"u}rder and Volker Werner and Johannes Wiederhold",

year = "2018",

month = nov,

day = "14",

doi = "10.1051/epjconf/201819403002",

language = "English",

volume = "194",

journal = "EPJ Web of Conferences",

issn = "2100-014X",

publisher = "EDP Sciences",

}

Stoyanova, M, Rainovski, G, Jolie, J, Pietralla, N, Blazhev, A, Djongolov, M, Esmaylzadeh, A, Gerhard, L, Gladnishki, K, Karayonchev, V, Keatings, J, Kern, R, Kocheva, D, Kröll, T, Mashtakov, K, Möller, O, Régis, J-M, Scheck, M, Schomacker, K, Sinclair, J, Sürder, C, Werner, V & Wiederhold, J 2018, 'A study on the transition between seniority-type and collective excitations in ²⁰⁴Po and ²⁰⁶Po', EPJ Web of Conferences, vol. 194, 03002. https://doi.org/10.1051/epjconf/201819403002

TY - JOUR

T1 - A study on the transition between seniority-type and collective excitations in 204Po and 206Po

AU - Stoyanova, Milena

AU - Rainovski, Georgi

AU - Jolie, Jan

AU - Pietralla, Norbert

AU - Blazhev, Andrey

AU - Djongolov, Martin

AU - Esmaylzadeh, Arwin

AU - Gerhard, Lisa

AU - Gladnishki, Kalin

AU - Karayonchev, Vasil

AU - Keatings, James

AU - Kern, Ralph

AU - Kocheva, Diana

AU - Kröll, Thorsten

AU - Mashtakov, Konstantin

AU - Möller, Oliver

AU - Régis, Jean-Marc

AU - Scheck, Marcus

AU - Schomacker, Kerstin

AU - Sinclair, Jacqueline

AU - Sürder, Chistian

AU - Werner, Volker

AU - Wiederhold, Johannes

PY - 2018/11/14

Y1 - 2018/11/14

N2 - Low-lying yrast states in 204Po and 206Po have been investigated by the γ-γ fast timing technique with LaBr3(Ce) detectors. Excited states of these nuclei were populated in the 197Au(11B,4n) and the 198Pt(12C,4n) fusion-evaporation reactions, respectively, at the FN-Tandem Facility at the University of Cologne. The lifetimes of the 4+1 states in both nuclei were measured, along with an upper limit for the 2+1 state in 204Po. The preliminary results are discussed in the scope of the systematic behavior of the transition strengths between yrast states in polonium isotopes.

AB - Low-lying yrast states in 204Po and 206Po have been investigated by the γ-γ fast timing technique with LaBr3(Ce) detectors. Excited states of these nuclei were populated in the 197Au(11B,4n) and the 198Pt(12C,4n) fusion-evaporation reactions, respectively, at the FN-Tandem Facility at the University of Cologne. The lifetimes of the 4+1 states in both nuclei were measured, along with an upper limit for the 2+1 state in 204Po. The preliminary results are discussed in the scope of the systematic behavior of the transition strengths between yrast states in polonium isotopes.

U2 - 10.1051/epjconf/201819403002

DO - 10.1051/epjconf/201819403002

M3 - Article

SN - 2100-014X

VL - 194

JO - EPJ Web of Conferences

JF - EPJ Web of Conferences

M1 - 03002

ER -

A study on the transition between seniority-type and collective excitations in 204Po and 206Po

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A study on the transition between seniority-type and collective excitations in ²⁰⁴Po and ²⁰⁶Po