Sol-gel coated glass cells for spin-exchange polarized {sup 3}He

Journal Article · Mon Sep 25 00:00:00 EDT 2000 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.1312855· OSTI ID:20217669

Hsu, Ming F ^[1]; Cates, G D ^[1]; Kominis, I ^[1]; Aksay, I A ^[2]; Dabbs, D M ^[2]

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1. Department of Physics, Princeton University, Princeton, New Jersey 08544 (United States)
2. Department of Chemical Engineering and Princeton Materials Institute, Princeton University, Princeton, New Jersey 08544 (United States)

We have developed a high-purity sol-gel coating for the interior surface of glass cells used for polarizing {sup 3}He by spin-exchange optical pumping. The coating is designed to minimize spin relaxation due to wall collisions. A longitudinal spin-relaxation time T{sub 1} in a sol-gel coated Pyrex cell of 344{+-}8 h was achieved, the longest T{sub 1} we have ever recorded for a gaseous sample. Repeated trials indicated that the coating was quite robust. Results using an uncoated Pyrex cell were also quite good, although inferior to the performance of the coated cell. (c) 2000 American Institute of Physics.

• OSTI ID: 20217669
• Journal Information: Applied Physics Letters, Vol. 77, Issue 13; Other Information: PBD: 25 Sep 2000; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
HELIUM 3
POLARIZATION
SOL-GEL PROCESS
GLASS
COATINGS
OPTICAL PUMPING
SPIN EXCHANGE
RELAXATION TIME
PYREX
EXPERIMENTAL DATA