Coulomb Excitation of Proton-rich <i>N</i>=80 Isotones at HIE-ISOLDE

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Kern, Ralph, Zidarova, Radostina, Pietralla, Norbert, Rainovski, Georgi, Gaffney, Liam P ORCID: 0000-0002-2938-3696, Blazhev, Andrey, Boukhari, Amar, Cederkall, Joakim, Cubiss, James G, Djongolov, Martin et al (show 28 more authors) , Fransen, Christoph, Gladnishki, Kalin, Giannopoulos, Efstathios, Hess, Herbert, Jolie, Jan, Karayonchev, Vasil, Kaya, Levent, Keatings, James M, Kocheva, Diana, Kroell, Thorsten, Moeller, Oliver, O'Neill, George G, Pakarinen, Janne, Reiter, Peter, Rosiak, Dawid, Scheck, Marcus, Snall, Jacob, Soderstrom, Par-Anders, Spagnoletti, Pietro, Stegmann, Robert, Stoyanova, Milena, Thiel, Stefan, Vogt, Andreas, Warr, Nigel, Welker, Andree, Werner, Volker, Wiederhold, Johannes and De Witte, Hilde (2020) Coulomb Excitation of Proton-rich <i>N</i>=80 Isotones at HIE-ISOLDE. In: XXIII International School on Nuclear Physics, Neutron Physics and Applications, 2019-9-22 - 2019-9-28, Varna, Bulgaria.

Text Kern et al. - 2020 - Journal of Physics Conference Series - Coulomb Excitation of Proton-rich N = 80 Isotones at HIE-ISOLDE.pdf - Published version Download (819kB) | Preview

Abstract

<jats:title>Abstract</jats:title> <jats:p>A projectile Coulomb-excitation experiment was performed at the radioactive ion beam facility HIE-ISOLDE at CERN. The radioactive <jats:sup>140</jats:sup>Nd and <jats:sup>142</jats:sup>Sm ions were post accelerated to the energy of 4.62 MeV/A and impinged on a 1.45 mg/cm<jats:sup>2</jats:sup>-thin <jats:sup>208</jats:sup>Pb target. The <jats:italic>γ</jats:italic> rays depopulating the Coulomb-excited states were recorded by the HPGe-array MINIBALL. The scattered charged particles were detected by a double-sided silicon strip detector in forward direction. Experimental <jats:italic>γ</jats:italic>-ray intensities were used for the determination of electromagnetic transition matrix elements. Preliminary results for the reduced transition strength of the <jats:inline-formula> <jats:tex-math><?CDATA $\rm {B}(M1; {2}_{3}^{+}\to {2}_{1}^{+})=0.35(19) {\mu }_{\rm {N}}^{2}$?></jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mrow> <mml:mi mathvariant="normal">B</mml:mi> <mml:mo stretchy="false">(</mml:mo> <mml:mi>M</mml:mi> <mml:mn>1</mml:mn> <mml:mo>;</mml:mo> <mml:mspace width="0.25em" /> <mml:msubsup> <mml:mn>2</mml:mn> <mml:mn>3</mml:mn> <mml:mo>+</mml:mo> </mml:msubsup> <mml:mo>→</mml:mo> <mml:msubsup> <mml:mn>2</mml:mn> <mml:mn>1</mml:mn> <mml:mo>+</mml:mo> </mml:msubsup> <mml:mo stretchy="false">)</mml:mo> <mml:mo>=</mml:mo> <mml:mn>0.35</mml:mn> <mml:mo stretchy="false">(</mml:mo> <mml:mn>19</mml:mn> <mml:mo stretchy="false">)</mml:mo> <mml:mspace width="0.25em" /> <mml:mspace width="0.25em" /> <mml:msubsup> <mml:mi>μ</mml:mi> <mml:mi mathvariant="normal">N</mml:mi> <mml:mn>2</mml:mn> </mml:msubsup> </mml:mrow> </mml:math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="JPCS_1555_1_012027_ieqn1.gif" xlink:type="simple" /> </jats:inline-formula> of <jats:sup>140</jats:sup>Nd and a first estimation for <jats:sup>142</jats:sup>Sm have been deduced using the Coulomb-excitation calculation software GOSIA. The <jats:inline-formula> <jats:tex-math><?CDATA ${2}_{3}^{+}$?></jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mrow> <mml:msubsup> <mml:mn>2</mml:mn> <mml:mn>3</mml:mn> <mml:mo>+</mml:mo> </mml:msubsup> </mml:mrow> </mml:math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="JPCS_1555_1_012027_ieqn2.gif" xlink:type="simple" /> </jats:inline-formula> states of <jats:sup>140</jats:sup>Nd and <jats:sup>142</jats:sup>Sm show indications of being the main fragment of the proton-neutron mixed-symmetry <jats:inline-formula> <jats:tex-math><?CDATA ${2}_{1,\rm {ms}}^{+}$?></jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mrow> <mml:msubsup> <mml:mn>2</mml:mn> <mml:mrow> <mml:mn>1</mml:mn> <mml:mo>,</mml:mo> <mml:mi mathvariant="normal">ms</mml:mi> </mml:mrow> <mml:mo>+</mml:mo> </mml:msubsup> </mml:mrow> </mml:math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="JPCS_1555_1_012027_ieqn3.gif" xlink:type="simple" /> </jats:inline-formula> state.</jats:p>

Item Type:	Conference or Workshop Item (Unspecified)
Depositing User:	Symplectic Admin
Date Deposited:	28 Aug 2020 08:44
Last Modified:	11 Oct 2023 22:45
DOI:	10.1088/1742-6596/1555/1/012027
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3098825