New results with stored exotic nuclei at relativistic energies

被引：53

作者：

Geissel, H ^{[1
]}

Litvinov, YA

Attallah, F

Beckert, K

Beller, P

Bosch, F

Boutin, D

Faestermann, T

Falch, M

Franzke, B

Hausmann, M

Hellström, M

Kaza, E

Kerscher, T

Klepper, O

Kluge, HJ

Kozhuharov, C

Kratz, KL

Litvinov, SA

Löbner, KEG

Maier, L

Matos, M

Münzenberg, G

Nolden, F

Novikov, YN

Ohtsubo, T

Ostrowski, A

Patyk, Z

Pfeiffer, B

Portillo, M

Radon, T

Scheidenberger, C

Shishkin, V

Stadlmann, J

Steck, M

Viera, DJ

Weick, H

Winkler, M

Wollnik, H

Yamaguchi, T

机构：

[1] Gesell Schwerionenforsch Inst Darmstadt, D-64291 Darmstadt, Germany

[2] Univ Giessen, D-35392 Giessen, Germany

[3] Tech Univ Munich, D-85748 Garching, Germany

[4] Univ Munich, D-85748 Garching, Germany

[5] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[6] Univ Mainz, D-55099 Mainz, Germany

[7] St Petersburg State Univ, St Petersburg 198904, Russia

[8] St Petersburg Nucl Phys Inst, Gatchina 188350, Russia

[9] Niigata Univ, Niigata 95021, Japan

[10] Soltan Inst Nucl Studies, PL-00681 Warsaw, Poland

来源：

NUCLEAR PHYSICS A | 2004年 / 746卷

关键词：

D O I：

10.1016/j.nuclphysa.2004.09.030

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Recently, much progress has been made with stored exotic nuclei at relativistic velocities ((v)/(c) = 0.7). Fragments of Pb-208 and Bi-209 projectiles and fission products from U-238 ions were produced, separated in flight with the fragment separator FRS, and injected into the storage-cooler ring ESR for precision measurements. 114 new masses of neutron-deficient isotopes in the lead region have been measured with time-resolved Schottky Mass Spectrometry (SMS). A new isospin dependence of the pairing energy was observed due to the improved mass accuracy of typically 1.5 x 10(-7) (30 keV). New masses of short-lived neutron-rich fission fragments have been obtained with Isochronous Mass Spectrometry (IMS). An innovative field of spectroscopy has been opened up with lifetime measurements of stored bare and few-electron fragments after applying both stochastic and electron cooling.

引用

页码：150C / 155C

页数：6

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