Improved energies for the 5.2 keV M1 and 42.0 keV M2 nuclear transitions in 83Rb

A. Kh. Inoyatov; M. Ryšavý; A. Kovalík; D. V. Filosofov; V. S. Zhdanov; Yu. V. Yushkevich

doi:10.1140/epja/i2014-14059-0

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2024 Impact factor 2.8

Hadrons and Nuclei

Eur. Phys. J. A (2014) 50: 59
https://doi.org/10.1140/epja/i2014-14059-0

Regular Article - Experimental Physics

Improved energies for the 5.2 keV M1 and 42.0 keV M2 nuclear transitions in ⁸³Rb

A. Kh. Inoyatov¹^,2^*, M. Ryšavý³, A. Kovalík¹^,3, D. V. Filosofov¹, V. S. Zhdanov⁴ and Yu. V. Yushkevich¹

¹ Laboratory of Nuclear Problems, JINR, Dubna, Russian Federation
² Institute of Applied Physics, National University, Tashkent, Republic of Uzbekistan
³ Nuclear Physics Institute of the ASCR, CZ-25068, Řež, Czech Republic
⁴ Nuclear Physics Institute, Almaty, Kazakhstan

^* e-mail: inoyatov@jinr.ru

Received: 2 November 2013
Revised: 1 February 2014
Accepted: 4 February 2014
Published online: 25 March 2014

Abstract

The low-energy electron spectrum following the decay of ⁸³Sr was analysed at high instrumental resolution by an electrostatic spectrometer. Significantly improved energies of $5235.7\pm 0.8$ and $42078.0\pm 1.8$ eV were determined from the conversion electron spectra for the nuclear transitions depopulating the first 3/2^- and the second $9/2^{+}$ excited states in ⁸³Rb to the $5/2^{-}$ ground state, respectively. The M1 character for the 5.2keV nuclear transition was confirmed and the E2 admixture parameter $\delta^{2}(E2/M1)=(2.6\pm 0.2)\times 10^{-5}$ was obtained. Values of $2.8\pm 0.2$ , $3.8\pm 0.2$ , $1.4\pm 0.3$ , $1.4\pm 0.4$ , and $4.1\pm 0.3$ eV were determined for the K, L₁, L₂, L₃, and M₁ natural atomic level widths of rubidium, respectively.