Charge transfer by electronic excitation: Direct measurement by high resolution spectroscopy in the gas phase

2009 ◽  
Vol 131 (21) ◽  
pp. 211101 ◽  
Author(s):  
A. J. Fleisher ◽  
P. J. Morgan ◽  
D. W. Pratt
Keyword(s):  
Charge Transfer ◽  
High Resolution ◽  
Gas Phase ◽  
Direct Measurement ◽  
Electronic Excitation ◽  
High Resolution Spectroscopy

scholarly journals Shapes, Dynamics, and Stability of β-Ionone and Its Two Mutants Evidenced by High-Resolution Spectroscopy in the Gas Phase

2018 ◽  
Vol 9 (7) ◽  
pp. 1497-1502 ◽  
Author(s):  
Iciar Uriarte ◽  
Sonia Melandri ◽  
Assimo Maris ◽  
Camilla Calabrese ◽  
Emilio J. Cocinero
Keyword(s):  
High Resolution ◽  
Gas Phase ◽  
High Resolution Spectroscopy

Proton transfer dynamics via high resolution spectroscopy in the gas phase and instanton calculations

2004 ◽  
Vol 120 (24) ◽  
pp. 11351-11354 ◽  
Author(s):  
Joseph R. Roscioli ◽  
David W. Pratt ◽  
Zorka Smedarchina ◽  
Willem Siebrand ◽  
Antonio Fernández-Ramos
Keyword(s):  
High Resolution ◽  
Proton Transfer ◽  
Gas Phase ◽  
High Resolution Spectroscopy

High-resolution spectroscopy of the (000)–(000) band of the CaOD radical

1994 ◽  
Vol 72 (11-12) ◽  
pp. 1200-1205 ◽  
Author(s):  
Mingguang Li ◽  
John A. Coxon
Keyword(s):  
High Resolution ◽  
Gas Phase ◽  
Ground State ◽  
Measurement Accuracy ◽  
Isotope Effects ◽  
Spin Rotation ◽  
High Resolution Spectroscopy ◽  
Rotational Line ◽  
Measured Line ◽  
Line Positions

The [Formula: see text] (000)–(000) band of the gas-phase CaOD radical has been rotationally analyzed using high-resolution laser spectroscopy. The technique of intermodulated fluorescence was employed to resolve the small spin-rotation splittings in the ground state. The measurement accuracy of the rotational line positions was 0.003 cm−1. The measured line positions have been employed in a least-squares estimation of the molecular constrants for both electronic states. Isotope relations between the constants of CaOH and CaOD are examined, and the constants AD and γ for the Ã2Π(000) level were separated using isotope effects.

The Gas Phase Anisole Dimer: A Combined High-Resolution Spectroscopy and Computational Study of a Stacked Molecular System†

2009 ◽  
Vol 113 (52) ◽  
pp. 14343-14351 ◽  
Author(s):  
G. Pietraperzia ◽  
M. Pasquini ◽  
N. Schiccheri ◽  
G. Piani ◽  
M. Becucci ◽  
...  
Keyword(s):  
High Resolution ◽  
Gas Phase ◽  
Computational Study ◽  
Molecular System ◽  
High Resolution Spectroscopy

Microcalorimeters for X-Ray Spectroscopy

1988 ◽  
Vol 102 ◽  
pp. 41
Author(s):  
E. Silver ◽  
C. Hailey ◽  
S. Labov ◽  
N. Madden ◽  
D. Landis ◽  
...  
Keyword(s):  
High Resolution ◽  
High Efficiency ◽  
Thermal Response ◽  
Low Noise ◽  
High Resolution Spectroscopy ◽  
Superconducting Transition ◽  
Sapphire Substrates ◽  
Laboratory Plasmas ◽  
Adiabatic Demagnetization ◽  
Theoretical Predictions

The merits of microcalorimetry below 1°K for high resolution spectroscopy has become widely recognized on theoretical grounds. By combining the high efficiency, broadband spectral sensitivity of traditional photoelectric detectors with the high resolution capabilities characteristic of dispersive spectrometers, the microcalorimeter could potentially revolutionize spectroscopic measurements of astrophysical and laboratory plasmas. In actuality, however, the performance of prototype instruments has fallen short of theoretical predictions and practical detectors are still unavailable for use as laboratory and space-based instruments. These issues are currently being addressed by the new collaborative initiative between LLNL, LBL, U.C.I., U.C.B., and U.C.D.. Microcalorimeters of various types are being developed and tested at temperatures of 1.4, 0.3, and 0.1°K. These include monolithic devices made from NTD Germanium and composite configurations using sapphire substrates with temperature sensors fabricated from NTD Germanium, evaporative films of Germanium-Gold alloy, or material with superconducting transition edges. A new approache to low noise pulse counting electronics has been developed that allows the ultimate speed of the device to be determined solely by the detector thermal response and geometry. Our laboratory studies of the thermal and resistive properties of these and other candidate materials should enable us to characterize the pulse shape and subsequently predict the ultimate performance. We are building a compact adiabatic demagnetization refrigerator for conveniently reaching 0.1°K in the laboratory and for use in future satellite-borne missions. A description of this instrument together with results from our most recent experiments will be presented.

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