Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Boxcar averager"'
Publikováno v:
Spectrophotometry and Spectrofluorimetry : A Practical Approach, 2000.
Externí odkaz:
https://doi.org/10.1093/oso/9780199638130.003.0007
Publikováno v:
SPIE Proceedings.
Pulsed photothermal interferometry (PTI) gas sensor with hollow-core photonic bandgap fibre (HC-PBF) is demonstrated with a Sagnac interferometer-based phase detection system. Under the condition of constant peak pump power, the optimal pulse duratio
Publikováno v:
Transactions of Nonferrous Metals Society of China. 18:222-226
To develop a fast and sensitive alloy elemental analysis method, a laser-induced breakdown spectroscopy(LIBS) system was established and used to carry out quantitative analysis of impurities in aluminum alloys in air at atmospheric pressure. A digita
Publikováno v:
Micro- and Nanotechnology Sensors, Systems, and Applications VI.
Chemical sensors based on micro/nanoelectromechanical systems (M/NEMS) offer many advantages. However, obtaining chemical selectivity in M/NEMS sensors using chemoselective interfaces has been a longstanding challenge. Despite their many advantages,
Publikováno v:
Measurement Science and Technology. 7:1204-1211
A low-cost, true integrating averager circuit has been designed for applications where low-level signal voltages must be recovered from noisy waveforms. The design separates the integrating, averaging and amplifying stages of the unit, so that correc
Publikováno v:
Review of Scientific Instruments. 65:2984-2990
We study experimentally and theoretically the time evolution of the electron temperature Te of a photoionized barium vapor which expands freely into a vacuum. Using the gas dynamics fundamental equations and assuming the plasma expansion to be adiaba
Autor:
Sanford L. Shew, Carter L. Olson
Publikováno v:
Analytical Chemistry. 64:1546-1551
Simulated annealing, a nonlinear parameter estimation method, is used to address the problem of biexponential decay law determinations. With a laboratory-constructed fluorometer using a nitrogen-pumped dye laser as a source of very short light pulses
Publikováno v:
Proceedings / Indian Academy of Sciences. 104:339-350
A spectrometer for measuring luminescence lifetimes has been developed. The design includes a bifurcated fibre optic cable for delivering the light from the source to the sample and from the sample to the detector. It uses a fast photomultiplier tube
Publikováno v:
SPIE Proceedings.
In the device, a He-Ne laser of flash frequency 1-20 Hz was adopted as exciting light source, and three key technical problems have been solved successfully in order to enhance the detecting sensitivity and measuring stability of the device for time-
Publikováno v:
2007 IEEE 34th International Conference on Plasma Science (ICOPS).
Summary form only given. Knowledge of ion drift velocities is important to the understanding of how ions are accelerated towards the plasma sheath. We present ion-acoustic wave propagation data taken in a multi-dipole plasma which addresses this issu