The REX-ISOLDE project

The Radioactive Beam Experiment REX-ISOLDE [1–3] is a pilot experiment at ISOLDE (CERN) testing the new concept of post acceleration of radioactive ion beams by using charge breeding of the ions in a high charge state ion source and the efficient acceleration of the highly charged ions in a short LINAC using modern ion accelerator structures. In order to prepare the ions for the experiments singly charged radioactive ions from the on-line mass separator ISOLDE will be cooled and bunched in a Penning trap, charge bred in an electron beam ion source (EBIS) and finally accelerated in the LINAC. The LINAC consists of a radiofrequency quadrupole (RFQ) accelerator, which accelerates the ions up to 0.3 MeV/u, an interdigital H-type (IH) structure with a final energy between 1.1 and 1.2 MeV/u and three seven gap resonators, which allow the variation of the final energy. With an energy of the radioactive beams between 0.8 MeV/u and 2.2 MeV/u a wide range of experiments in the field of nuclear spectroscopy, astrophysics and solid state physics will be addressed by REX-ISOLDE.

[1]  P. Van Duppen,et al.  REX-ISOLDE project , 1997 .

[2]  D. Beck,et al.  A cylindrical Penning trap for capture, mass selective cooling, and bunching of radioactive ion beams , 1997 .

[3]  B. A. Brown,et al.  Collectivity in 44S , 1997 .

[4]  U. Köster,et al.  Ion sources for fission fragment accelerators , 1998 .

[5]  P. Goldsmith,et al.  Dust temperature distributions in star-forming condensations , 1993 .

[6]  F. Ames,et al.  The REX-ISOLDE project , 1997 .

[7]  F. Tokanai,et al.  Observation of an excited state in 7He with unusual structure , 1999 .

[8]  Steiner,et al.  New Region of Deformation: The Neutron-Rich Sulfur Isotopes. , 1996, Physical review letters.

[9]  B. Visentin,et al.  Efficiency measurements for a low charge state ionic injection into an electron beam ion source , 1995 .

[10]  U. Ratzinger.  The IH structure—a new approach to the fusion RF linac , 1993 .

[11]  B. A. Brown,et al.  QUADRUPOLE COLLECTIVITY IN 32,34,36,38SI AND THE N = 20 SHELL CLOSURE , 1998 .

[12]  P. Mantica,et al.  Coulomb excitation of odd-A neutron-rich pi (s-d) and nu (f-p) shell nuclei , 1999 .

[13]  P. Thirolf,et al.  Population of 10 Li by fragmentation , 1999 .

[14]  G. Bollen,et al.  A new cooling technique for heavy ions in a Penning trap , 1991 .

[15]  F. Thielemann,et al.  Isotopic r-process abundances and nuclear structure far from stability. , 1993 .

[16]  I. Tanihata.  Neutron halo nuclei , 1996 .

[17]  W. Nazarewicz,et al.  Coexistence in even-mass nuclei , 1992 .

[18]  M. Grieser,et al.  Development of seven-gap resonators for the Heidelberg high current injector , 1993 .

[19]  F. Thielemann,et al.  Reaction rates and reaction sequences in the rp-process , 1994 .

[20]  Sheikh,et al.  Nuclear shell structure at particle drip lines. , 1994, Physical review letters.

[21]  A. Nier,et al.  The Determination of Atomic Mass Doublets by Means of a Mass Spectrometer , 1951 .

[22]  H. Kluge,et al.  Quadrupole excitation of stored ion motion at the true cyclotron frequency , 1995 .

[23]  Goldberg,et al.  Study of the unbound nucleus 11N by elastic resonance scattering. , 1996, Physical review. C, Nuclear physics.

[24]  Lutz Schweikhard,et al.  ISOLTRAP: a tandem Penning trap system for accurate on-line mass determination of short-lived isotopes , 1996 .

[25]  S. Shimoura,et al.  Large deformation of the very neutron-rich nucleus 32Mg from intermediate-energy Coulomb excitation , 1995 .

[26]  H. G. Thomas,et al.  Encapsulated Ge detectors: Development and first tests , 1996 .

[27]  H. Klein,et al.  Four-rod-λ/2-RFQ for light ion acceleration , 1985 .

[28]  O. Kester,et al.  Beam optics design of the REX-ISOLDE /q/m-separator , 1999 .

[29]  N. Angert,et al.  CERN heavy-ion facility design report , 1993 .

[30]  P. Duppen,et al.  External ion injection into an EBIS source: efficiency measurements , 1994 .

[31]  Zhukov,et al.  Simplified alpha +4n model for the 8He nucleus. , 1994, Physical review. C, Nuclear physics.

[32]  R. Ronningen,et al.  Role of intruder configurations in Ne and Mg , 1999 .

[33]  K. Kratz,et al.  Astrophysics and nuclei far from stabilitys , 1994 .