https://doi.org/10.1140/epjd/e2008-00124-1
First measurement of the hydrogen spin-exchange collision cross-section in the low temperature region
1
Sektion Physik, Ludwigs-Maximillians-Universität Mdotunchen, 85748 Garching, Germany
2
Physikalisches Institut Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
3
Dipartimento di Fisica Universita' di Ferrara, 44100 Ferrara, Italy
4
NIKHEF, 1009 DB Amsterdam, The Netherlands
5
Yerevan Physics Institute, 375036 Yerevan, Armenia
Corresponding author: a lenisa@hermes.desy.de
Received:
20
March
2008
Revised:
23
May
2008
Published online:
21
June
2008
The spin-exchange collision cross-section for hydrogen atoms has been measured for the first time in the low temperature range 40–100 K by using the polarized hydrogen gas target of the HERMES experiment at DESY (Hamburg, Germany). The results agree with a previous measurement in the overlapping temperature region 80–100 K, while seem to hint an increasing behaviour with temperature in the region 50–80 K.
PACS: 39.10.+j – Atomic and molecular beam sources and techniques / 13.88.+e – Polarization in interactions and scattering
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2008
