TY - GEN
T1 - The production of negative lithium beams by charge exchange in cesium vapours
AU - Re, M.
AU - Menna, M.
AU - Chines, F.
AU - Cuttone, G.
AU - Messina, E.
AU - Stracener, D. W.
AU - Bilheux, J. C.
PY - 2005
Y1 - 2005
N2 - These measurements were carried out at the Holifield Radioactive Ion Beam Facility of the Oak Ridge National Laboratory (ORNL-HRIBF) by researchers from the Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud (INFN-LNS), Catania, Italy and local staff. The Charge Exchange Cell (CEC) consisted of a vacuum chamber containing cesium vapours at a variable temperature T, in which positive ions accelerated from an ion source were transformed into negative ones by collisions with the Cs atoms. The main goal of this test was to measure the production efficiency for 7Li - ions at different operating conditions, such as 7Li + beam energy (5 to 55 keV) and Cs temperature (190 to 300°C). Moreover, the efficiency measurements performed with a 6Li + projectile beam gave clear indications about the isotopic shift effect. These results are useful to estimate the charge exchange efficiency for 8, 9Li, which will be the first radioactive beams to be produced at the EXCYT facility (EXotics with CYclotron and Tandem). The data showed that the charge exchange efficiency at the minimum energy suitable for beam handling (20-25 keV) is around 1%.
AB - These measurements were carried out at the Holifield Radioactive Ion Beam Facility of the Oak Ridge National Laboratory (ORNL-HRIBF) by researchers from the Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud (INFN-LNS), Catania, Italy and local staff. The Charge Exchange Cell (CEC) consisted of a vacuum chamber containing cesium vapours at a variable temperature T, in which positive ions accelerated from an ion source were transformed into negative ones by collisions with the Cs atoms. The main goal of this test was to measure the production efficiency for 7Li - ions at different operating conditions, such as 7Li + beam energy (5 to 55 keV) and Cs temperature (190 to 300°C). Moreover, the efficiency measurements performed with a 6Li + projectile beam gave clear indications about the isotopic shift effect. These results are useful to estimate the charge exchange efficiency for 8, 9Li, which will be the first radioactive beams to be produced at the EXCYT facility (EXotics with CYclotron and Tandem). The data showed that the charge exchange efficiency at the minimum energy suitable for beam handling (20-25 keV) is around 1%.
UR - http://www.scopus.com/inward/record.url?scp=33847174153&partnerID=8YFLogxK
U2 - 10.1109/PAC.2005.1590603
DO - 10.1109/PAC.2005.1590603
M3 - Conference contribution
AN - SCOPUS:33847174153
SN - 0780388593
SN - 9780780388598
T3 - Proceedings of the IEEE Particle Accelerator Conference
SP - 898
EP - 900
BT - Proceedings of the Particle Accelerator Conference, PAC 2005
T2 - Particle Accelerator Conference, PAC 2005
Y2 - 16 May 2005 through 20 May 2005
ER -