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.
|Titolo:||A new experimental approach for isochronous mass measurements of short-lived exotic nuclei with the FRS-ESR facility|
|Data di pubblicazione:||2006|
|Citazione:||A new experimental approach for isochronous mass measurements of short-lived exotic nuclei with the FRS-ESR facility / Geissel H.; Knoebel R.; Litvinov Yu. A.; Sun B.; Beckert K.; Beller P.; Bosch F.; Boutin D.; Brandau C.; Chen L.; Fabian B.; Hausmann M.; Kozhuharov C.; Kurcewicz J.; Litvinov S. A.; Mazzocco M.; Montes F.; Muenzenberg G.; Musumarra A; Nociforo C.; Nolden F.; Plass W. R.; Scheidenberger C.; Steck M.; Weick H.; Winkler M.. - In: HYPERFINE INTERACTIONS. - ISSN 0304-3843. - 173:1-3(2006), pp. 49-54.|
|Appare nelle tipologie:||1.1 Articolo in rivista|