Optical response of small silver clusters

The time-dependent local density approximation is applied to the optical response of the silver clusters, Ag_2, Ag_3, Ag_8 and Ag_9^+. The calculation includes all the electrons beyond the closed-shell Ag^{+11} ionic core, thus including for the first time explicitly the filled d-shell in the response. The excitation energy of the strong surface plasmon near 4 eV agrees well with experiment. The theoretical transition strength is quenched by a factor of 4 with respect to the pure s-electron sum rule in Ag_8 due to the d-electrons. A comparable amount of strength lies in complex states below 6 eV excitation. The total below 6 eV, about 50% of the s sum rule, is consistent with published experiments.Comment: 13 pages RevTex and 9 Postscript figure

ESR und ODMR an zinklueckenassoziierten Stoerstellen im Zinkselenid

SIGLECopy held by FIZ Karlsruhe; available from UB/TIB Hannover / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Spektroskopie an matrixisolierten Metallatomen und -aggregaten Schlussbericht. Statusbericht: 31.12.1985

SIGLETIB: D.Dt.F./AC 1000 (25,15) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Gasrueckfuehrung und selbstueberwachende Systeme an Tankstellen Durchfuehrung von praktischen Feldtests/Testphase im ganzheitlichen System

The amendment of the 21"s"t Regulation on Air-Pollution Control dated 17.05.2002 describes continuous control of the function of gas recovery systems in gasoline stations by automatic control systems. Both systems available in the market (supplied by FAFNIR and TOKHEIM) were tested in extensive field tests. Both systems are ready for mass production. New dispensers are delivered with self control systems per production-type since 1.04.2003. Supplementary kits for the different dispenser types are available. (orig.)Available from TIB Hannover: RN 4117(550-04) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Erprobungen und Innovationen fuer selbstueberwachende Systeme zur Ermittlung der Funktionsfaehigkeit von Gasrueckfuehrungssystemen an Tankstellen in Feldtests

Bei der Ueberpruefung der Gasrueckfuehrungssysteme an Tankstellen durch Ueberwachungsbehoerden sind Maengel bis hin zu Totalausfaellen festgestellt worden. Zur Ermittlung der Funktionsfaehigkeit von Gasrueckfuehrungssystemen wurden selbstueberwachende Systeme entwickelt, die in Feldtests erprobt wurden. Bislang gibt es nur wenige Anbieter. Die Prototypen von 2 Herstellern (Fafnir und Tokheim) sind erfolgreich in der Praxis getestet worden. (orig.)Tests on vapour recovery systems in retail stations (stage II systems) have shown malfunctions up to complete system failure. Self testing systems are being developed for continuous checking of proper function of stage II systems, these were evaluated in field tests. To date, only very few manufacturers are on the market. During this project, the prototypes of 2 manufacturers (Fafnir and Tokheim) were tested successfully. (orig.)SIGLEAvailable from TIB Hannover: RN 4117(550-02) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman