Infrared diode laser spectroscopy of the SiCl+ ion
نویسندگان
چکیده
The infrared diode laser spectrum of the Sic1 + ion generated in a discharge of Sic& mixed with He has been observed by the hollow cathode discharge modulation method. Sixteen and nine absorption lines for the Si3sCl+ and Si37C1+ isotopic species, respectively, have been assigned to R and P branch transitions of tbe fundamental band. The spectroscopic constants derived from simultaneous analysis of both isotopic species are, for the Si3’Cl+, 0.=678.310(69) cm-‘, 0&~=2.365(35) cm-‘, &=0.287034(19) cm-L,~.=1.47866(82)~l0-1cm-1and0,=2.171(82)~10~7cm-‘.Theequilibriumbondlengthcalculated from the rotational constant is r,= 1.943890( 69) A. The figures in parentheses are uncertainties corresponding to three standard deviations to be attached to the last digit.
منابع مشابه
Using tunable diode laser spectroscopy to detect trace moisture in ammonia
Detection of moisture contamination in hydride gases, such as ammonia used for epitaxial growth, has become a significant concern for manufacturers of III-V compound semiconductors. The presence of moisture in NH3 can negatively affect device properties, such as minority-carrier lifetimes and luminescent efficiency in light-emitting diodes. Tunable diode laser spectroscopy (TDLAS) has emerged a...
متن کاملTunable Far Infrared Laser Spectroscopy
using C02 laser difference generation in metal-insulator-metal diodes either from the difference between a fixed frequency C02 laser and a tunable waveguide laser, or from the difference between two fixed frequency C02 lasers plus microwave sidebands. is being used to make highly accurate FIR frequency measurements of stable species to serve as frequency and wavelength calibration standards; to...
متن کاملInfrared Diode Laser Spectroscopy of Fundamental and Hot Bands of BBr (X1Sigma+).
Infrared absorption spectra of the four common isotopic forms of the transient molecule BBr (11B79Br, 11B81Br, 10B79Br, and 10B81Br) have been observed in natural abundance. The spectra were detected in the region between 650 and 720 cm-1 using diode laser spectroscopy of a BBr3/He ac discharge. Over 150 lines consisting of both fundamental and hot bands up to v" = 5 have been fitted to Watson'...
متن کاملExternal-cavity frequency-stabilization of visible and infrared semiconductor lasers for high resolution spectroscopy
We have shown that external cavity stabilization can be a straightforward and powerful technique for converting diode lasers of poor spectral quality into useful tools for high precision laser spectroscopy. The method requires an anti-reflection coating on one facet of the diode laser but, contrary to popular belief, this is not difficult and does not require any specialized equipment. We descr...
متن کاملMid-infrared wavelength- and frequency-modulation spectroscopy with a pump-modulated singly-resonant optical parametric oscillator.
We describe the implementation of the wavelength- and frequency-modulation spectroscopy techniques using a singly-resonant optical parametric oscillator (OPO) pumped by a fiber-amplified diode laser. Frequency modulation of the diode laser was transferred to the OPO's mid-infrared idler output, avoiding the need for external modulation devices. This approach thus provides a means of implementin...
متن کامل