Hyperfine Interactions 132: 531-534, 2001

A New Concept for Time-of-Flight Mass Spectrometry with Slowed-down Short-Lived Isotopes

C.SCHEIDENBERGER1, F.ATTALLAH1, A.CASARES2, U.CZOK2, A.DODONOV3, S.A.ELISEEV2, H.GEISSEL1, M.HAUSMANN1, A.KHOLOMEEV2, V.KOZLOVSKI3, YU.A.LITVINOV1, M.MAIER1, G.MUNZENBERG1, N.NANKOV1, YU.N.NOVIKOV4, T.RADON1, J.STADLMANN2, H.WEICK1, M.WEIDENMULLER1, H.WOLLNIK2 and Z.ZHOU2
11GSI, Planckstrasse 1, D-64291 Darmstadt, Germany
2II. Physikalisches Institut, Universitat Giessen, D-35392 Giessen, Germany
3Institute of Chemical Physics, Chernogolovka, Russia
4Petersburg Nuclear Physics Institute, St. Petersburg, Russia

Hyperfine Interactions 132: 531-534, 2001

   A new concept for direct mass measurements of short-lived nuclei with an electrostatic time-of-flight mass spectrometer is described. The spectrometer can be coupled to an in-flight separator such as SHIP or FRS via a gas stopping cell and a gas-filled linear Paul trap. The time required for mass measurement is of the order of a few milliseconds allowing one to investigate nuclei with these short half-lives. A mass-resolving-power m/DmFWHM = 50 000 has been reached. First results of the range-focusing technique are presented, which is under development for the efficient stopping and extraction of relativistic exotic nuclei.

© 2001 Kluwer Academic Publishers. Printed in the Netherlands.