Abstract
Projectile fragments separated in flight with the FRS have been injected into the storage ring ESR. Operating the ESR in the isochronous mode has enabled high-resolution mass measurements of short-lived isotopes. Already in our pilot experiments the Isochronous Mass Spectrometry (IMS) has provided accurate results for a restricted isotope range in the neighborhood of a selected isotope characterized by the best isochronous condition. In the present experiment this restriction has been overcome by precise external magnetic rigidity determination (1.5 – 10−4) at the dispersive midplane of the FRS. In this way the mass resolving power for neutron-rich fission fragments covering a large mass-over-charge ratio in one spectrum has been improved by up to one order of magnitude and the accuracy by more than a factor of two.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Geissel, H., et al.: Phys. Rev. Lett. 68, 3412 (1992)
Irnich, H., et al.: Phys. Rev. Lett. 75, 4182 (1995)
Block, M., et al.: Eur. Phys. J. A 25(Sup. 1), 49 (2005)
Wotlersheim, HJ., et al.: Nucl. Instrum. Methods A 537, 637 (2005)
Geissel, H., et al.: Nucl. Instrum. Methods B 70, 286 (1992)
Franzke, B.: Nucl. Instrum. Methods B 24/25, 18 (1987)
An international Accelera tor Facility for Beams of ions and Antiprotons, Conceptual Design Report, GSI (2001), http://www.gsi.de/GSI-Future/cdr//GSI-Future/cdr/.
Blasche, K., Franczak, B.: In: Proc. 3rd Eur. Part. Acc. Coni, Berlin, vol. 9 (1992)
Litvinov, Yu. A., et al.: Nucl. Phys. A 756, 3 (2005)
Geissel, H., et al.: Proceedings of RNB7. Eur. Phys. J. (accepted for publication)
Wollnik, H., et al.: SIS Experiment Proposal 1987 and Hausmann, M. et al.: Nucl. Instrum. Methods A 446, 569 (2000)
Matos, M.: Doctoral Thesis, Universität Giessen (2004)
Wapstra, A.H., Audi, G., Thibault, C.: Nucl. Phys. A 729, 129 (2003)
Beller, P., et al.: In: Proc. 9th Eur. Part. Acc. Conf., Lucerne, Switzerland, vol. 1174 (2004)
Geissei, H., et al.: Nucl. Instrum. Methods B 204, 71 (2003)
Nolden, F., et al.: Nucl. Instrum. Methods A 441, 219 (2000)
Hofstadter, R.: Rev. Mod. Phys. 28, 214 (1956)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2007 Springer Science + Business Media B.V.
About this paper
Cite this paper
Geissel, H. et al. (2007). A new experimental approach for isochronous mass measurements of short-lived exotic nuclei with the FRS-ESR facility. In: Dilling, J., Comyn, M., Thompson, J., Gwinner, G. (eds) TCP 2006. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-73466-6_26
Download citation
DOI: https://doi.org/10.1007/978-3-540-73466-6_26
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-73465-9
Online ISBN: 978-3-540-73466-6
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)