New results with stored exotic nuclei at relativistic energies

Conference · Thu Jan 01 00:00:00 EST 2004

OSTI ID:977765

Bosch, F ^[1]; Boutin, D ^[2]; Fastermann, T ^[3]; Falch, M ^[4]; Franzke, B ^[5]; Hausmann, M ^[6]; Hellstrom, M ^[7]; Kaza, E ^[8]; Kerscher, T ^[3]; Klepper, O ^[9]; Kluge, H -Jürgen; Kozhuharov, C ^[10]; Kratz, K L; Litinov, S A ^[11]; Lobner, G K. E. ^[12]; Maier, L ^[13]; Matos, M ^[14]; Munzenberg, G ^[15]; Nolden, F ^[1]; Novikov, Y N ^[16] ; Ohtsubo, T ^[17]; Ostrowski, A ^[18]; Patyk, Z ^[19]; Pfeiffer, B; Portillo, M ^[20]; Radon, T P ^[21]; Scheidenberger, C ^[22]; Shishkin, V ^[23]; Stadlman, J ^[24]; Steck, M ^[4]; Vieira, D J ^[25]; Weick, H ^[26]; Winkler, M ^[27]; Wollnik, Hermann; Yamaguchi, T ^[28]

---

1. Fritz
2. Daniel
3. Thomas
4. Markus
5. Bernhard
6. Marc
7. Margarete
8. Evangelia
9. Otto
10. Christophor
11. Sergei A
12. Gunther K. E.
13. Ludwig
14. Milan
15. Gottfried
16. Yuri N.
17. Takashi
18. Alexander
19. Zygmund
20. Mauricio
21. Torsten P.
22. Christoph
23. Vladimir
24. Jens
25. David J.
26. Helmut
27. Martin
28. Takayuki

Recently, much progress has been made with stored exotic nuclei at relativistic velocities v/c = 0.7. Fragments of {sup 208}Pb and {sup 209}Bi projectiles and fission fragments from {sup 238}U ions have been produced, separated in flight with the fragment separator FRS, and injected into the storage-cooler ring ESR for precision measurements. Precise 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 typical 1.5 x 10{sup -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.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• OSTI ID: 977765
• Report Number(s): LA-UR-04-4884; TRN: US1003717
• Resource Relation: Conference: Submitted to: Proceedings of the Sixth International Conference on Radioactive Nuclear Beams (RNB6), to be published in Nuclear Physics A.
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCURACY
ELECTRON COOLING
FISSION FRAGMENTS
ISOSPIN
LIFETIME
MASS SPECTROSCOPY
NEUTRON-DEFICIENT ISOTOPES
NUCLEI
PAIRING ENERGY
PROJECTILES
SPECTROSCOPY