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公开(公告)号:US20090261822A1
公开(公告)日:2009-10-22
申请号:US11918853
申请日:2006-03-25
申请人: Stephan Appelt , Wolfgang Haesing , Ulrich Sieling , Holger Kuehn
发明人: Stephan Appelt , Wolfgang Haesing , Ulrich Sieling , Holger Kuehn
IPC分类号: G01R33/26
CPC分类号: G01R33/282
摘要: The invention concerns a method for hyperpolarizing lithium atoms in a mixture by optically pumping, in a sampling cell, atoms of a first type or alkali metal and by spin exchange between the optically pumped electron of the alkali metal and the lithium atom electron. The lithium atoms are preferably oxidized into Li+ ions and accumulated. The nuclear spin polarization of the Li+ ions can be transmitted to a nuclear spin of an anion. The invention also concerns a method for producing substances with nuclear spin polarization in general. In accordance with said method, lithium atoms are optically pumped from atoms of a first type of alkali metal in a sampling cell and hyperpolarized by spin exchange between the optical pumped electron of the alkali metal and the lithium atom electron, the lithium atoms being then oxidized into Li+ ions. Then, the nuclear spin polarization of the Li+ ions is transmitted to another nucleus of an anion. Thus it is possible to obtain hyperpolarized nuclei such as, for example, 13C, 31P or 29Si in solid or liquid phase, in large amounts and at high polarizing levels.
摘要翻译: 本发明涉及一种通过在采样单元中光学泵浦第一类型或碱金属原子并通过碱性金属的光泵浦电子与锂原子电子之间的自旋交换来超极化混合物中的锂原子的方法。 锂原子优选被氧化成Li +离子并累积。 Li +离子的核自旋极化可以传递到阴离子的核自旋。 本发明还涉及通常产生具有核自旋极化的物质的方法。 根据所述方法,锂原子在取样室中从第一种碱金属的原子被光泵浦,并通过碱金属的光泵浦电子与锂原子电子之间的自旋交换进行超极化,然后锂原子被氧化 进入Li +离子。 然后,Li +离子的核自旋极化被传递到阴离子的另一个核。 因此,可以在固相或液相中以大量和高极化水平获得超极化核,例如13C,31P或29Si。
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公开(公告)号:US5838712A
公开(公告)日:1998-11-17
申请号:US750691
申请日:1996-12-18
IPC分类号: H01S3/094 , H01S3/0941 , H01S5/024 , H01S3/09 , H01S3/091
CPC分类号: H01S3/042 , H01S3/025 , H01S3/0941 , H01S3/0407 , H01S3/061 , H01S3/09408 , H01S3/094096 , H01S5/02423
摘要: A diode-pumped high performance solid state laser has at least one pump module comprising at least two laser diode arrays which transversely irradiate a solid state laser rod. The path length of the radiation emitted by a laser diode array through the solid state laser rod and the required absorption path for this radiation, determined by the emission wavelength of this radiation and the doping of the laser-active medium, are adapted to one another extensively in different ways.
摘要翻译: PCT No.PCT / EP96 / 01151 Sec。 371日期:1996年12月18日 102(e)日期1996年12月18日PCT 1996年3月18日PCT公布。 第WO96 / 34435号公报 日期1996年10月31日二极管泵浦高性能固体激光器具有至少一个泵模块,其包括横向照射固态激光棒的至少两个激光二极管阵列。 由激光二极管阵列通过固态激光棒发射的辐射的路径长度和由该辐射的发射波长和激光活性介质的掺杂确定的用于该辐射的所需吸收路径彼此适配 广泛地以不同的方式。
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