First Isochronous Time-of-Flight Mass Measurements of Short-Lived Projectile Fragments in the ESR

Conference · Sun Dec 31 00:00:00 EST 2000

OSTI ID:784418

Stadlmann, J; Geissel, H; Hausmann, M; Nolden, F; Radon, T; Schatz, H; Scheidenberger, C; Attallah, F; Beckert, K; Bosch, F; Falch, M; Franczak, B; Franzke, B; Kerscher, Th; Klepper, O; Kluge, H J; Kozhuharov, C; Loebner, K E.G.; Muenzenberg, G; Novikov, Yu N ; Steck, M; Sun, Z; Suemmerer, K; Weick, H; Wollnik, H

A new method for precise mass measurements of short-lived hot nuclei is presented. These nuclei were produced via projectile fragmentation, separated with the FRS and injected into the storage ring ESR being operated in the isochronous mode. The revolution time of the ions is measured with a time-of-flight detector sensitive to single particles. This new method allows access to exotic nuclei with half-lives in the microsecond region. First results from this novel method obtained with measurements on neutron-deficient fragments of a chromium primary beam with half-lives down to 50 ms are reported. A precision of {delta}m/m {<=} 5 {center_dot} 10{sup -6} has been achieved.

• Research Organization: II. Physikalisches Institut, JLU Giessen, Giessen (DE); Gesellschaft fuer Schwerionenforschung mbH, Darmstadt (DE); Sektion fuer Physik, LMU Muenchen, Garching (DE); St. Petersburg Nuclear Physics Institute, Gatchina (RU)
• Sponsoring Organization: None (US)
• OSTI ID: 784418
• Report Number(s): ISBN 1-56396-928-9; ISSN 0094-243X; CODEN APCPCS; ISBN 1-56396-928-9; ISSN 0094-243X; CODEN APCPCS; TRN: US0200285
• Resource Relation: Conference: Nuclear Physics at Storage Rings: Fourth International Conference: STORI99, Bloomington, IN (US), 09/12/1999--09/16/1999; Other Information: PBD: 31 Dec 2000
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHROMIUM
FRAGMENTATION
HOT NUCLEI
ESR STORAGE RING
TIME-OF-FLIGHT MASS SPECTROMETERS
NEUTRON-DEFICIENT ISOTOPES
INTERMEDIATE MASS NUCLEI
MASS
HALF-LIFE
BETA DECAY
TIME-OF-FLIGHT METHOD
MEASURING METHODS
MILLISEC LIVING RADIOISOTOPES