Production cross section and decay study of 243Es and 249Md

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Briselet, R, Theisen, Ch, Vandebrouck, M, Marchix, A, Airiau, M, Auranen, K, Badran, H, Boilley, D, Calverley, T, Cox, D et al (show 35 more authors) (2019) Production cross section and decay study of 243Es and 249Md. PHYSICAL REVIEW C, 99 (2). 024614-.

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Official URL: http://dx.doi.org/10.1103/PhysRevC.99.024614

Abstract

In the study of the odd-$Z$, even-$N$ nuclei $^{243}$Es and $^{249}$Md, performed at the University of Jyv\"askyl\"a, the fusion-evaporation reactions $^{197}$Au($^{48}$Ca,2$n$)$^{243}$Es and $^{203}$Tl($^{48}$Ca,2$n$)$^{249}$Md have been used for the first time. Fusion-evaporation residues were selected and detected using the RITU gas-filled separator coupled with the focal-plane spectrometer GREAT. For $^{243}$Es, the recoil decay correlation analysis yielded a half-life of $24 \pm 3$s, and a maximum production cross section of $37 \pm 10$ nb. In the same way, a half-life of $26 \pm 1$ s, an $\alpha$ branching ratio of 75 $\pm$ 5%, and a maximum production cross section of 300 $\pm$ 80 nb were determined for $^{249}$Md. The decay properties of $^{245}$Es, the daughter of $^{249}$Md, were also measured: an $\alpha$ branching ratio of 54 $\pm$ 7% and a half-life of 65 $\pm$ 6 s. Experimental cross sections were compared to the results of calculations performed using the KEWPIE2 statistical fusion-evaporation code.

Item Type:	Article
Uncontrolled Keywords:	nucl-ex, nucl-ex
Depositing User:	Symplectic Admin
Date Deposited:	03 Oct 2018 15:21
Last Modified:	11 Oct 2023 07:33
DOI:	10.1103/PhysRevC.99.024614
Open Access URL:	https://doi.org/10.1103/PhysRevC.99.024614
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3027053