Title:
過分極不活性ガス製造用コーティング
Document Type and Number:
Japanese Patent JP4584278
Kind Code:
B2
Abstract:
The invention provides a method of inhibiting surface-induced nuclear spin relaxation and surface trapping of a hyperpolarized noble gas, most preferably 129Xe, by polymer-coated surfaces. The method includes inhibiting the amount of interaction of the noble gas with a polymeric coating on the surface of apparatus which contacts the noble gas. Preferably, the method includes inhibiting noble gas nuclear spin relaxation by replacing at least some of the protons in the polymer with substituents which have non-zero nuclear spin and/or reduced polymer permeability. A preferred substituent having non-zero spin is deuterium. A preferred modification which reduces permeability includes introducing into the polymer a substituent such as a halogen, more preferably fluorine. The method also provides containers having surfaces which have been coated with a polymer which inhibits noble gas trapping and nuclear spin relaxation. Furthermore, the invention provides methods for enhancing the production and storage of a hyperpolarized noble gas by decreasing the relaxation of nuclear spin and limiting the trapping of the noble gas in a polymeric coating of apparatus containing the noble gas.
Inventors:
Dolly Whistle Bastien
Happer William
Kates Gordon Dee Junior
Happer William
Kates Gordon Dee Junior
Application Number:
JP2007079422A
Publication Date:
November 17, 2010
Filing Date:
March 26, 2007
Export Citation:
Assignee:
The Trustees Of Princeton University
International Classes:
G01R33/26; G01R33/28; A61B5/055; A61K49/18; B65D25/14; C01B23/00; C09D5/00; C09D123/00; C09D125/06; C09D183/05; C09D201/00; F17C1/16; G01N24/12
Domestic Patent References:
| JP7082278A | ||||
| JP7031545A |
Other References:
Z.Wu et al.,Experimental studies of wall interactions of adsorbed spin-polarized 131Xe nuclei,Physical Review A,1990年,Vol.42 No.5,pp.2774-2784
B.Driehuys et al.,Surface Relaxation Mechanisms of Laser-Polarized 129Xe,Physical Review Letters,1995年 6月12日,Vol.37 No.24,pp.4943-4946
B.Driehuys et al.,Surface Relaxation Mechanisms of Laser-Polarized 129Xe,Physical Review Letters,1995年 6月12日,Vol.37 No.24,pp.4943-4946
Attorney, Agent or Firm:
Minoru Nakamura
Fumiaki Otsuka
Shishido Kaichi
Nobuo Ogawa
Kenji Asai
Fumiaki Otsuka
Shishido Kaichi
Nobuo Ogawa
Kenji Asai