In-beam ?-ray spectroscopy of Ag-94


Pereira-Lopez, X, Bentley, MA, Wadsworth, R, Ruotsalainen, P, Lenzi, SM, Forsberg, U, Auranen, K, Blazhev, A, Cederwall, B, Grahn, T et al (show 28 more authors) (2023) In-beam ?-ray spectroscopy of Ag-94. EUROPEAN PHYSICAL JOURNAL A, 59 (3). 44-.

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Abstract

<jats:title>Abstract</jats:title><jats:p>A recoil-beta-tagging experiment has been performed to study the excited <jats:inline-formula><jats:alternatives><jats:tex-math>$$T=0$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>T</mml:mi> <mml:mo>=</mml:mo> <mml:mn>0</mml:mn> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> and <jats:inline-formula><jats:alternatives><jats:tex-math>$$T=1$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>T</mml:mi> <mml:mo>=</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> states in the odd–odd <jats:inline-formula><jats:alternatives><jats:tex-math>$$N=Z$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>N</mml:mi> <mml:mo>=</mml:mo> <mml:mi>Z</mml:mi> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> nucleus <jats:inline-formula><jats:alternatives><jats:tex-math>$$^{94}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>94</mml:mn> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula>Ag, populated via the <jats:inline-formula><jats:alternatives><jats:tex-math>$$^{40}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>40</mml:mn> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula>Ca(<jats:inline-formula><jats:alternatives><jats:tex-math>$$^{58}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>58</mml:mn> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula>Ni,1p3n)<jats:inline-formula><jats:alternatives><jats:tex-math>$$^{94}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>94</mml:mn> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula>Ag reaction. The experiment was conducted using the MARA recoil separator and JUROGAM3 array at the Accelerator Laboratory of the University of Jyväskylä. Through correlating fast, high-energy beta decays at the MARA focal plane with prompt <jats:inline-formula><jats:alternatives><jats:tex-math>$$\gamma $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>γ</mml:mi> </mml:math></jats:alternatives></jats:inline-formula> rays emitted at the reaction target, a number of transitions between excited states in <jats:inline-formula><jats:alternatives><jats:tex-math>$$^{94}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>94</mml:mn> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula>Ag have been identified. The timing characteristics of these transitions confirm that they fall within decay sequences that feed the short-lived <jats:inline-formula><jats:alternatives><jats:tex-math>$$T=1$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>T</mml:mi> <mml:mo>=</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> ground state of <jats:inline-formula><jats:alternatives><jats:tex-math>$$^{94}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>94</mml:mn> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula>Ag. The transitions are proposed to proceed within and between the sets of states with <jats:inline-formula><jats:alternatives><jats:tex-math>$$T=0$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>T</mml:mi> <mml:mo>=</mml:mo> <mml:mn>0</mml:mn> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> and <jats:inline-formula><jats:alternatives><jats:tex-math>$$T=1$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>T</mml:mi> <mml:mo>=</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula>. Possible correspondence between some of these transitions from analog states in <jats:inline-formula><jats:alternatives><jats:tex-math>$$^{94}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>94</mml:mn> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula>Pd has been discussed, and shell-model calculations including multipole and monopole electromagnetic effects have been presented, in order to enable predictions of the decay patterns between the <jats:inline-formula><jats:alternatives><jats:tex-math>$$T=0$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>T</mml:mi> <mml:mo>=</mml:mo> <mml:mn>0</mml:mn> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> and <jats:inline-formula><jats:alternatives><jats:tex-math>$$T=1$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>T</mml:mi> <mml:mo>=</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> states and to allow a theoretical set of Coulomb energy differences to be calculated for the <jats:inline-formula><jats:alternatives><jats:tex-math>$$A = 94$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>A</mml:mi> <mml:mo>=</mml:mo> <mml:mn>94</mml:mn> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula><jats:inline-formula><jats:alternatives><jats:tex-math>$$T=1$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>T</mml:mi> <mml:mo>=</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> analog states.</jats:p>

Item Type: Article
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 05 May 2023 09:09
Last Modified: 17 Mar 2024 16:24
DOI: 10.1140/epja/s10050-023-00950-8
Open Access URL: https://doi.org/10.1140/epja/s10050-023-00950-8
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3170203
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