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Münster 2002 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 45: Nuclear Physics / Spectroscopy VII

HK 45.3: Talk

Thursday, March 14, 2002, 17:00–17:15, B

Spin-Orientation in a projectile-fragmentation reaction — •dana borremans1, Gerda Neyens1, Dimiter Balabanski1, Nico Coulier1, Jean-Michel Daugas1, Francois de Oliveira2, Georgi Georgiev1,2, Marek Lewitowitz2, Oscar Navilliat Cuncic3, Iolanda Matea2, Mihai Stanoiu2, Stephanie Teughels1, and Katrien Vyvey11Celestijnenlaan 200D, 3001Heverlee,Belgium — 2GANIL, Caen,France — 3LPC, Caen, France

To measure nuclear moments of short-lived nuclei, we need often an initially oriented ensemble of nuclear spins. This orientation can be the result of nuclear reactions. For the production of exotic nuclei, we use a projectile-fragmentation reaction. It has been shown that nuclei produced in such reaction are spin-oriented [1-4], but the spin orientation mechanism is not yet completely understood. At GANIL we studied the orientation in a projectile-fragmentation reaction using β-Level Mixing techniques [5]. In this talk the idea behind the measurement of spin-orientation and the orientation mechanism will be explained, concluding with some results.

[1] W.D.Schmidt-Ott et al., Z. Phys. A350 (1994) 215

[2] K.Asahi et al., Phys Lett. B 251 (1990) 488

[3] K.Asahi et al., Phys.Rev. C 43 (1991) 456

[4] G.Neyens et al., Phys.Lett. B393 (1997) 36

[5] G.Neyens et al., Phys. Res. A340 (1994) 555

*D.B.is an assistant researcher,G.N. a post-doctoral researcher of FWO-Vlaanderen.

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