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Alpha particle salts

No stable divalent salt is known. However, Am2+ has been detected in CaF2 matrix (0.1% Am) by paramagnetic resonance spectrum at low temperature. Its formation is attributed to the reduction of Am3+ by electrons in the lattice set free by the effects of alpha particle emission. [Pg.18]

The alkali metals are not found free in nature, because they are so easily oxidized. They are most economically produced by electrolysis of their molten salts. Sodium (2.6% abundance by mass) and potassium (2.4% abundance) are very common in the earth s crust. The other lA metals are quite rare. Francium consists only of short-lived radioactive isotopes formed by alpha-particle emission from actinium (Section 26-4). Both potassium and cesium also have natural radioisotopes. Potassium-40 is important in the potassium-argon radioactive decay method of dating ancient objects (Section 26-12). The properties of the alkali metals vary regularly as the group is descended (Table 23-1). [Pg.921]

Intermolecular forces involving sulfur hexafluoride molecules have been discussed in several papers (91, 121, 122, 194, 350, 296). Other studies include (a) molecular volume (254), (b) stopping of alpha particles (16,117), (c) transfer of energy by collision (205), (d) mutual diffusion of H2 and SF6 (291), (e) mutual solubilities of gases, including SF , in water (197), (f) salting out of dissolved gases (219), (g) compressibility (193) (h) Faraday effect (161), (i) adsorption on dry lyophilized proteins (14), (j) effect of pressure on electronic transitions (231), (k) thermal relaxation of vibrational states (232), (1) ultraviolet spectrum (295), (m) solubility in a liquid fluorocarbon (280). [Pg.112]

Booth L, Gillespie B, Seaman G (1997) In 5th nondestructive assay/nondestructive examination waste characterization conference, Salt Lake City Bortels G (1991) Status of high-resolution alpha-particle spectrometry using Si detectors, EUR-1368613. In Annual symposium on safeguards and nuclear material management, Avignon, France, 14-16 May, pp 159-163(745 pp)... [Pg.3004]

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See also in sourсe #XX -- [ Pg.223 ]



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