Blaum, K

CERN Document Server

CERN/INTC-2002-038  INTC/O-012 20 November 2002EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCHF U R T H E R    C O M M E N T Sto proposal P160HIGH-PRECISION MASS MEASUREMENTS OF EXOTIC NUCLEIWITH THE TRIPLE-TRAP MASS SPECTROMETER ISOLTRAPK. Blaum1, G. Audi2, D. Beck1, G. Bollen3, S. Heinz4, F. Herfurth5, H.-J. Kluge1,A. Kellerbauer4, D. Lunney2, R.B. Moore6, C. Scheidenberger1, S. Schwarz3,L. Schweikhard71GSI, Planckstra§e 1, 64291 Darmstadt, Germany2CSNSM-IN2P3-CNRS, Universit de Paris Sud, 91406 Orsay, France3NSCL, Michigan State University, East Lansing, MI 48824, United States of America4Institut f. Physik, Ludwig Maximilian Universitt, 85748 Mnchen, Germany5CERN, Division EP, 1211 Genve, Switzerland6Physics Dept., McGill University, H3A 2T8 Montral (Qubec), Canada7Institut f. Physik, Ernst Moritz Arndt-Universitt, 17487 Greifswald, GermanySpokesperson: Klaus Blaum (Klaus.Blaum@CERN.ch)Contactperson: Frank Herfurth (Frank.Herfurth@CERN.ch)In proposal P 160 we asked for 104 shifts of radioactive beam for high-precision massmeasurements of short-lived nuclides with the Penning trap mass spectrometer ISOLTRAP.The proposed mass measurements covered four different fields of interest. A detailed list wasgiven in the proposal.As requested by the committee we would like to add a priority list to our original proposalindicating which masses we would like to address first. We have divided the list in two parts;those masses which we would like to address first since they have high priority (**) and thosemasses which we would like to address second (lower priority, *). The list is not only basedon the importance of the physics output by these mass measurements but also on the requiredpreparatory studies with our setup and on the targets needed to get access to some of theproposed masses.As already mentioned in the proposal for some of the proposed mass measurements technicalpreparatory work is needed. This is especially the case for the light mass region (6,8He, 9,11Li,and 11,12Be) where cooling in the RFQ ion beam cooler and buncher and the cooling Penningtrap by H2 gas (instead of He) has to be demonstrated. In addition we have to change for veryshort-lived nuclides (half-lives < 50 ms) the time structure of our measurement cycle whichrequires some changes in the ISOLTRAP control program.Priority list:Nuclides Field of interest No. of shifts Priority Target14O CVC, CKM 3 ** SiC17-19N halo, IMME 6 ** CaO17-19, 23-26Ne halo, IMME 7 ** MgO / UC22Mg CVC, CKM 4 ** SiC26mAl CVC, CKM 3 ** SiC38mK IMME 4 ** Ti metal foil62Zn CVC, CKM 2 ** Nb foil62Ga CVC, CKM 6 ** ZrO274Rb CVC, CKM 6 ** Nb foil67-71Ni mass surface 5 ** UC67-78Cu Mass surface 8 ** UC54 radioactive beam shifts6,8He Halo 4 * ThC / UC9,11Li Halo 4 * Thin Ta foil11,12Be Halo 3 * UC or Ta foil74-79Zn Mass surface 4 * UC74-83Ga Mass surface 5 * UC58-66Mn Mass surface 5 * UC115-124Ag mid masses 7 * UC125-131Cd mid masses 5 * UC131-134Sn mid masses 3 * UC211-216Tl heavy masses 4 * ThC / UC213-217Pb heavy masses 3 * ThC / UC215-218Bi heavy masses 3 * ThC / UC50 radioactive beam shifts

Further comments to proposal P160

Abstract

Similar works

Full text

Available Versions

CERN Document Server