Difference between revisions of "Caesium hydride"
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'''Caesium hydride''' (CsH) is a compound of [[caesium]] and [[hydrogen]]. | '''Caesium hydride''' (CsH) is a compound of [[caesium]] and [[hydrogen]]. | ||
| − | It was the first substance to be | + | It was the first substance to be created by light-induced particle formation in a metal vapor.<ref>{{citation | first1 = A. | last1 = Tam | first2 = G. | last2 = Moe | first3 = W. | last3 = Happer | title = Particle Formation by Resonant Laser Light in Alkali-Metal Vapor | journal = Phys. Rev. Lett. | year = 1975 | volume = 35 | pages = 1630–33 | doi = 10.1103/PhysRevLett.35.1630}}.</ref> It also showed promise in early studies of an [[ion propulsion]] system using caesium.<ref>{{citation | last1 = Burkhart | first1 = J. A. | last2 = Smith | first2 = F. J. | title = Application of dynamic programming to optimizing the orbital control process of a 24-hour communications satellite | url = http://ntrs.nasa.gov/search.jsp?R=543868&id=2&qs=N%3D4294965816 | series = NASA Technical Report | date = November 1963}}.</ref> |
| − | The caesium nuclei in CsH can be hyperpolarized through interactions with an [[Optical Pumping|optically pumped]] caesium vapor in a process known as [[spin- | + | The caesium nuclei in CsH can be hyperpolarized through interactions with an [[Optical Pumping|optically pumped]] caesium vapor in a process known as [[spin-exchange optical pumping]] (SEOP). SEOP can increase the [[nuclear magnetic resonance]] (NMR) signal of caesium nuclei by an order of magnitude.<ref>{{citation | first1 = K. | last1 = Ishikawa | first2 = B. | last2 = Patton | first3 = Y.-Y. | last3 = Jau | first4 = W. | last4 = Happer | title = Spin Transfer from an Optically Pumped Alkali Vapor to a Solid | journal = Phys. Rev. Lett. | year = 2007 | volume = 98 | page = 183004 | doi = 10.1103/PhysRevLett.98.183004}}.</ref> |
==References== | ==References== | ||
Revision as of 07:58, 25 August 2009
| Caesium hydride | |
|---|---|
| |
| IUPAC name | Caesium hydride |
| Identifiers | |
| InChI | InChI=1/Cs.H/q+1;-1 |
| InChIKey | HXCOCQWMKNUQSA-UHFFFAOYAG |
| Standard InChI | InChI=1S/Cs.H/q+1;-1 |
| Standard InChIKey | HXCOCQWMKNUQSA-UHFFFAOYSA-N |
| CAS number | [] |
| ChemSpider | |
| Properties[1] | |
| Chemical formula | CsH |
| Molar mass | 133.91 g/mol |
| Appearance | white solid |
| Density | 3.41 g/cm3 |
| Solubility in water | reacts |
| Structure | |
| Crystal structure | NaCl, cF8 |
| Space group | Fm3m, No. 225 |
| Coordination geometry | Octahedral (Cs+) Octahedral (H−) |
| Related compounds | |
| Other anions | Caesium fluoride Caesium chloride Caesium bromide CsI |
| Other cations | Lithium hydride Sodium hydride Potassium hydride Rubidium hydride |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
Caesium hydride (CsH) is a compound of caesium and hydrogen. It was the first substance to be created by light-induced particle formation in a metal vapor.[2] It also showed promise in early studies of an ion propulsion system using caesium.[3]
The caesium nuclei in CsH can be hyperpolarized through interactions with an optically pumped caesium vapor in a process known as spin-exchange optical pumping (SEOP). SEOP can increase the nuclear magnetic resonance (NMR) signal of caesium nuclei by an order of magnitude.[4]
References
- ↑ CRC Handbook of Chemistry and Physics, 62nd ed.; Weast, Robert C., Ed.; CRC Press: Boca Raton, FL, 1981; p B-92. ISBN 0-8493-0462-8.
- ↑ Tam, A.; Moe, G.; Happer, W. Particle Formation by Resonant Laser Light in Alkali-Metal Vapor. Phys. Rev. Lett. 1975, 35, 1630–33. DOI: 10.1103/PhysRevLett.35.1630.
- ↑ Burkhart, J. A.; Smith, F. J. Application of dynamic programming to optimizing the orbital control process of a 24-hour communications satellite; NASA Technical Report, November 1963, <http://ntrs.nasa.gov/search.jsp?R=543868&id=2&qs=N%3D4294965816>.
- ↑ Ishikawa, K.; Patton, B.; Jau, Y.-Y.; Happer, W. Spin Transfer from an Optically Pumped Alkali Vapor to a Solid. Phys. Rev. Lett. 2007, 98, 183004. DOI: 10.1103/PhysRevLett.98.183004.
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