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HCl–rare gas van der Waals dimers trapped in rare gas matrix: Interpretation of the vibration–orientation spectrum (1992)

Laroui, B. ; Damak, O. ; Maillard, O. ; [et al.]

College Park, Md. : American Institute of Physics (AIP)

The Journal of Chemical Physics 97 (1992), S. 2359-2371

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ISSN: 1089-7690

Source: AIP Digital Archive

Topics: Physics , Chemistry and Pharmacology

Notes: Two semiempirical potentials are used to interpret the vibration–orientation spectrum of the hydrogen chloride–RG* dimers trapped in RG matrices (RG*, RG=Ar, Kr, Xe). The geometries of these dimers are calculated by including matrix relaxation and compared to those observed in the gas phase. It is shown that dimers in matrices can have radial and angular configurations very different from those reported in the gas phase, which have been used to fit potential parameters. The main features of the experimental spectrum of the trapped dimers are satisfactorily interpreted on the basis of one or the other potential. But none can lead to a universal interpretation of the infrared spectra of all the dimers. Arguments are developed on the main causes of discrepancies.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.463075

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Investigation of passivated silicon detectors for direct measurements of actinides (1997)

Carlan, L. ; Franck, D. ; Beaujard, P. ; [et al.]

Springer

Journal of radioanalytical and nuclear chemistry 226 (1997), S. 205-210

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ISSN: 1588-2780

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering

Notes: Abstract Although much progress was made by using high purity gemanium detectors for direct measurement of239Pu in man, the improvement of lung spectroscopy sensitivity remains a challenge. Previous work showed that passivated implanted planar silicon detectors could provide an alternative by combining high-energy resolution at room temperature and planar geometry with large detection arrays. This paper reports on the status of this research based on the characterisation of 3×3 cm2 and 6×3 cm2 strip silicon detectors. Furthemore, the possibility to apply such detectors towards other monitoring problems for accidental situations such as the direct measurement of small contaminated surfaces was investigated.