Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 223201 |
| Fachzeitschrift | Physical review letters |
| Jahrgang | 94 |
| Ausgabenummer | 22 |
| Publikationsstatus | Veröffentlicht - 7 Juni 2005 |
Abstract
We measure the rates of elastic and inelastic two-body collisions of cold spin-polarized neon atoms in the metastable P23 state for Ne20 and Ne22 in a magnetic trap. From particle loss, we determine the loss parameter of inelastic collisions β=6.5(18)×10-12cm3s-1 for Ne20 and β=1.2(3)×10- 11cm3s-1 for Ne22. These losses are caused by ionizing (i.e., Penning) collisions and occur less frequently than for unpolarized atoms. This proves the suppression of Penning ionization due to spin polarization. From cross-dimensional relaxation measurements, we obtain elastic scattering lengths of a=-180(40)a0 for Ne20 and a=+150-50+80a0 for Ne22, where a0=0.0529nm.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Allgemeine Physik und Astronomie
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in: Physical review letters, Jahrgang 94, Nr. 22, 223201, 07.06.2005.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Collisional Properties of Cold Spin-Polarized Metastable Neon Atoms
AU - Spoden, P.
AU - Zinner, M.
AU - Herschbach, N.
AU - Van Drunen, W. J.
AU - Ertmer, W.
AU - Birkl, G.
PY - 2005/6/7
Y1 - 2005/6/7
N2 - We measure the rates of elastic and inelastic two-body collisions of cold spin-polarized neon atoms in the metastable P23 state for Ne20 and Ne22 in a magnetic trap. From particle loss, we determine the loss parameter of inelastic collisions β=6.5(18)×10-12cm3s-1 for Ne20 and β=1.2(3)×10- 11cm3s-1 for Ne22. These losses are caused by ionizing (i.e., Penning) collisions and occur less frequently than for unpolarized atoms. This proves the suppression of Penning ionization due to spin polarization. From cross-dimensional relaxation measurements, we obtain elastic scattering lengths of a=-180(40)a0 for Ne20 and a=+150-50+80a0 for Ne22, where a0=0.0529nm.
AB - We measure the rates of elastic and inelastic two-body collisions of cold spin-polarized neon atoms in the metastable P23 state for Ne20 and Ne22 in a magnetic trap. From particle loss, we determine the loss parameter of inelastic collisions β=6.5(18)×10-12cm3s-1 for Ne20 and β=1.2(3)×10- 11cm3s-1 for Ne22. These losses are caused by ionizing (i.e., Penning) collisions and occur less frequently than for unpolarized atoms. This proves the suppression of Penning ionization due to spin polarization. From cross-dimensional relaxation measurements, we obtain elastic scattering lengths of a=-180(40)a0 for Ne20 and a=+150-50+80a0 for Ne22, where a0=0.0529nm.
UR - http://www.scopus.com/inward/record.url?scp=27744465756&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.94.223201
DO - 10.1103/PhysRevLett.94.223201
M3 - Article
AN - SCOPUS:27744465756
VL - 94
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 22
M1 - 223201
ER -