A Single-Beam Approach to the Absorption Spectroscopy of Microcrystals

1993 ◽  
Vol 46 (7) ◽  
pp. 1041 ◽  
Author(s):  
E Krausz
Keyword(s):  
Inorganic Chemistry ◽  
Data Acquisition ◽  
Absorption Spectroscopy ◽  
Computer Control ◽  
Single Beam ◽  
Temperature Range ◽  
Optimal Sample ◽  
Spectrometer System ◽  
Absorption Spectrometer ◽  
Better Than

A single-beam microcrystal absorption spectrometer system is described that operates in the range 300-2600 nm, on crystals smaller than 50 μm , in the temperature range 5-300 K, with resolution better than 1 cm-1. The computer control of data acquisition and baseline storage with interpolation generates data of exceptional quality, and simplifies operation. The salient features of the apparatus are discussed, and the optimal sample absorption is calculated. Examples of optical spectra with relevance to some current interests in inorganic chemistry are provided.

Computer control and data acquisition of the heavy ion beam probe (abstract)

1995 ◽  
Vol 66 (1) ◽  
pp. 315-315
Author(s):  
D. R. Demers ◽  
P. M. Schoch ◽  
T. P. Crowley ◽  
A. Ouroua
Keyword(s):  
Data Acquisition ◽  
Ion Beam ◽  
Computer Control ◽  
Heavy Ion ◽  
Heavy Ion Beam ◽  
Heavy Ion Beam Probe

scholarly journals COMPUTER CONTROL AND DATA ACQUISITION OF A TIDAL MODEL

1972 ◽  
Vol 1 (13) ◽  
pp. 133
Author(s):  
E.R. Funke
Keyword(s):  
Data Acquisition ◽  
Mechanical Engineering ◽  
Computer Control ◽  
Feedback Controller ◽  
Adaptive Feedback ◽  
Tidal Model ◽  
Computer Based ◽  
And Control ◽  
St Lawrence River ◽  
Diurnal Tides

A large tidal model of the St. Lawrence River covering the region from Montreal to lie du Bic is connected directly to a mini computer for data acquisition and control of the tidal boundary. Some of the more important concepts for the design and operation of a computer based system for this application are described. Details of an adaptive feedback controller for diurnal tides are given. A 16 mm film (N.R.C.-Division of Mechanical Engineering, film no. HYP 620, same title) describes the instrumentation and operation of the model. A report (N.R.C.-Division of Mechanical Engineering, Report No. MH-110, same title) provides further details of this system.

scholarly journals Thermophysical Properties of 1-Butanol at High Pressures

Energies ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 5046
Author(s):  
Marzena Dzida
Keyword(s):  
Speed Of Sound ◽  
Thermophysical Properties ◽  
High Pressures ◽  
Fuel Additive ◽  
Temperature Range ◽  
Isobaric Thermal Expansion ◽  
Isentropic And Isothermal Compressibilities ◽  
Overlap Method ◽  
Pulse Echo ◽  
Better Than

1-Butanol can be considered as a good fuel additive, which can be used at high pressures. Therefore, the knowledge of high-pressure thermophysical properties is crucial for this application. In this paper, new experimental data on the speed of sound in 1-butanol in the temperature range from 293 to 318 K and at pressures up to 101 MPa are reported. The speed of sound at a frequency of 2 MHz was measured at atmospheric and high pressures using two measuring sets operating on the principle of the pulse–echo–overlap method. The measurement uncertainties were estimated to be better than ±0.5 m·s−1 and ± 1 m·s−1 at atmospheric and high pressures, respectively. Additionally, the density was measured under atmospheric pressure in the temperature range from 293 to 318 K using a vibrating tube densimeter Anton Paar DMA 5000. Using the experimental results, the density and isobaric and isochoric heat capacities, isentropic and isothermal compressibilities, isobaric thermal expansion, and internal pressure were calculated at temperatures from 293 to 318 K and at pressures up to 100 MPa.

VUV laser absorption spectrometer system for measurement of H0 density and temperature in a plasma

1988 ◽  
Vol 59 (8) ◽  
pp. 1363-1368 ◽  
Author(s):  
G. C. Stutzin ◽  
A. T. Young ◽  
A. S. Schlachter ◽  
J. W. Stearns ◽  
K. N. Leung ◽  
...  
Keyword(s):  
Laser Absorption ◽  
Spectrometer System ◽  
Absorption Spectrometer
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