This title appears in the Scientific Report :
2005
Please use the identifier:
http://dx.doi.org/10.1016/j.nima.2004.08.094 in citations.
Nuclear Polarization Measurement of H/D Atoms Extracted from a Storage Cell with a Lamb-shift Polarimeter
Nuclear Polarization Measurement of H/D Atoms Extracted from a Storage Cell with a Lamb-shift Polarimeter
The occupation numbers of the individual hyperfine substates in a beam of hydrogen or deuterium atoms are measured with a Lamb-shift polarimeter. Therefore, the nuclear polarization of an atomic beam can be determined with high precision of about 0.5% within 20s. The measurements are carried out wit...
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Personal Name(s): | Engels, R. |
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Emmerich, R. / Ley, J. / Paetz gen. Schieck, H. / Mikirtychyants, M. / Rathmann, F. / Sarkadi, J. / Seyfarth, H. / Ullrich, T. / Vassiliev, A. | |
Contributing Institute: |
Institut 2 (Experimentelle Kernphysik II); IKP-E-2 |
Published in: | Nuclear instruments & methods in physics research / A, 536 (2005) S. 334 - 337 |
Published in: |
. |
Imprint: |
Amsterdam
North-Holland Publ. Co.
2005
|
Physical Description: |
334 - 337 |
DOI: |
10.1016/j.nima.2004.08.094 |
Document Type: |
Journal Article |
Research Program: |
Physik der Hadronen |
Series Title: |
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
536 |
Subject (ZB): | |
Publikationsportal JuSER |
The occupation numbers of the individual hyperfine substates in a beam of hydrogen or deuterium atoms are measured with a Lamb-shift polarimeter. Therefore, the nuclear polarization of an atomic beam can be determined with high precision of about 0.5% within 20s. The measurements are carried out with the atomic beam source for the internal polarized storage-cell gas target of ANKE (I similar to 7 x 10(16) atoms/s). The polarization of a slow (500-2000 eV) ion beam with currents higher than 1 nA can be measured as well. When the intensity of the atomic beam is reduced by a factor of 100, the Lamb-shift polarimeter still provides a precise measurement with an error of about 2 % within 30 s. Thus, it is thought possible to determine the nuclear polarization of the atomic gas inside the storage cell, when a sample of these atoms effuse into the Lamb-shift polarimeter through a sample tube.First, results obtained with a simple Teflon cell, a new ionizer with an internal getter pump, a newly designed Wien filter and a larger photomultiplier are presented. Planned studies to optimize the polarization measurement are discussed as well. (C) 2004 Elsevier B.V. All rights reserved. |