TY - JOUR
T1 - Recent progress in the development of a polarized proton target for reactions with radioactive ion beams
AU - Urrego-Blanco, J. P.
AU - Bingham, C. R.
AU - van den Brandt, B.
AU - Galindo-Uribarri, A.
AU - Gómez del Campo, J.
AU - Hautle, P.
AU - Konter, J. A.
AU - Padilla-Rodal, E.
AU - Schmelzbach, P. A.
PY - 2007/8
Y1 - 2007/8
N2 - Polarization observables in nuclear reactions with stable beams have provided important information concerning structural properties of nuclei and reaction mechanisms and hold great promise in the context of exotic nuclei. We report on the development of a polarized target based on plastic foils of 20-200 μm thickness to be used with radioactive ion beams. The operation of such a target requires a moderately high magnetic field and very low temperatures. The plastic foil is placed inside a chamber attached to the mixing chamber of a 3He-4He dilution refrigerator. Cooling of the foil is achieved via a superfluid film of 4He that can be supplied through two capillaries. The chamber has two thin, highly uniform silicon nitride windows. An NMR coil is attached to the target to monitor the polarization. Results of a first test to characterize the target system, using the elastic scattering of 38 MeV 12C by protons in inverse kinematics are presented.
AB - Polarization observables in nuclear reactions with stable beams have provided important information concerning structural properties of nuclei and reaction mechanisms and hold great promise in the context of exotic nuclei. We report on the development of a polarized target based on plastic foils of 20-200 μm thickness to be used with radioactive ion beams. The operation of such a target requires a moderately high magnetic field and very low temperatures. The plastic foil is placed inside a chamber attached to the mixing chamber of a 3He-4He dilution refrigerator. Cooling of the foil is achieved via a superfluid film of 4He that can be supplied through two capillaries. The chamber has two thin, highly uniform silicon nitride windows. An NMR coil is attached to the target to monitor the polarization. Results of a first test to characterize the target system, using the elastic scattering of 38 MeV 12C by protons in inverse kinematics are presented.
KW - Dynamic nuclear polarization
KW - Radioactive ion beams
KW - Resonant elastic scattering
UR - http://www.scopus.com/inward/record.url?scp=34447255010&partnerID=8YFLogxK
U2 - 10.1016/j.nimb.2007.04.257
DO - 10.1016/j.nimb.2007.04.257
M3 - Article
AN - SCOPUS:34447255010
SN - 0168-583X
VL - 261
SP - 1112
EP - 1116
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
IS - 1-2 SPEC. ISS.
ER -