Production of new neutron-rich isotopes of heavy elements in
  fragmentation reactions of $^{238}$U projectiles at 1 A GeV

A. R. Junghans; B. Fernández-Domínguez; B. Jurado; D. Cortina-Gil; E. Casarejos; F. Rejmund; H. Alvarez-Pol; J. Benlliure; J. Pereira; K.-H. Schmidt; L. Audouin; O. Yordanov; P. Napolitani; T. Enqvist; T. Kurtukian-Nieto

research

Production of new neutron-rich isotopes of heavy elements in fragmentation reactions of $^{238}$ U projectiles at 1 A GeV

Authors: A. R. Junghans
B. Fernández-Domínguez
B. Jurado
D. Cortina-Gil
E. Casarejos
F. Rejmund
H. Alvarez-Pol
J. Benlliure
J. Pereira
K.-H. Schmidt
L. Audouin
O. Yordanov
P. Napolitani
T. Enqvist
T. Kurtukian-Nieto
Publication date: 1 January 2010
Publisher: 'American Physical Society (APS)'
Doi

Abstract

The production of heavy neutron-rich nuclei has been investigated using cold fragmentation reactions of

^{238}

U projectiles at relativistic energies. The experiment performed at the high-resolving-power magnetic spectrometer FRS at GSI allowed to identify 45 new heavy neutron-rich nuclei:

^{205}

Pt,

^{207-210}

Au,

^{211-216}

Hg,

^{213-217}

Tl,

^{215-220}

Pb,

^{219-224}

Bi,

^{221-227}

Po,

^{224-229}

At,

^{229-231}

Rn and

^{233}

Fr. The production cross sections of these nuclei were also determined and used to benchmark reaction codes that predict the production of nuclei far from stability.Comment: 5 pages, 2 figure