Threshold determination of a ruby laser by single pulse technique

1966 ◽  
Vol 17 (3) ◽  
pp. 474-476
Author(s):  
A. Roulier ◽  
R. Dändliker ◽  
H. P. Brändli
Keyword(s):  
Ruby Laser ◽  
Single Pulse ◽  
Pulse Technique ◽  
Threshold Determination

Research of the Wood’s Alloy Crystallization Process Using the Acoustic Method

2021 ◽  
Vol 410 ◽  
pp. 855-861
Author(s):  
Aleksandr Yu. Yaroslavkin ◽  
Eugene A. Tyurin ◽  
Darya A. Melnikova
Keyword(s):  
Speed Of Sound ◽  
Crystallization Process ◽  
Ultrasonic Method ◽  
Single Pulse ◽  
Acoustic Method ◽  
The State ◽  
Sound Signal ◽  
Frequency Range ◽  
Wood’S Alloy

The article examines the process of crystallization of Wood alloy using the ultrasonic method. The dependence of the determination of the speed of sound in three aggregate states of the alloy (liquid, solid, transition (liquid-solid)) was derived. The relation-ship with the amplitude values of the sound signal, a single pulse in determining the speed of sound, as well as in determining the state of the alloy is carried out. The data obtained allow us to analyze the state of the alloy and the measurement time and the specified frequency range directly in the process of crystallization.

A new method for threshold determination of gray image

2020 ◽  
Vol 6 (4) ◽  
Author(s):  
Jiang-Feng Liu ◽  
Xu-Lou Cao ◽  
Jerry Xu ◽  
Qiang-Ling Yao ◽  
Hong-Yang Ni
Keyword(s):  
New Method ◽  
Gray Image ◽  
Threshold Determination

scholarly journals The Thousand-Pulsar-Array programme on MeerKAT – I. Science objectives and first results

2020 ◽  
Vol 493 (3) ◽  
pp. 3608-3615 ◽  
Author(s):  
Simon Johnston ◽  
A Karastergiou ◽  
M J Keith ◽  
X Song ◽  
P Weltevrede ◽  
...  
Keyword(s):  
Radio Emission ◽  
Single Pulse ◽  
Wide Band ◽  
Radio Pulsars ◽  
Pulse Trains ◽  
First Results ◽  
Dispersion Measures ◽  
Large Survey ◽  
First Time

ABSTRACT We report here on initial results from the Thousand-Pulsar-Array (TPA) programme, part of the Large Survey Project ‘MeerTime’ on the MeerKAT telescope. The interferometer is used in the tied-array mode in the band from 856 to 1712 MHz, and the wide band coupled with the large collecting area and low receiver temperature make it an excellent telescope for the study of radio pulsars. The TPA is a 5 year project, which aims at to observing (a) more than 1000 pulsars to obtain high-fidelity pulse profiles, (b) some 500 of these pulsars over multiple epochs, and (c) long sequences of single-pulse trains from several hundred pulsars. The scientific outcomes from the programme will include the determination of pulsar geometries, the location of the radio emission within the pulsar magnetosphere, the connection between the magnetosphere and the crust and core of the star, tighter constraints on the nature of the radio emission itself, as well as interstellar medium studies. First, results presented here include updated dispersion measures, 26 pulsars with Faraday rotation measures derived for the first time, and a description of interesting emission phenomena observed thus far.

scholarly journals Coating 1-Octanethiol-Coated Copper Nano-Ink on a Paper Substrate via Multi-Pulse Flash Light Sintering for Application in Disposable Devices

2020 ◽  
Vol 1 (1) ◽  
pp. 28-39
Author(s):  
Yeonho Son ◽  
Dongho Shin ◽  
Minkyu Kang ◽  
Caroline Sunyong Lee
Keyword(s):  
Energy Density ◽  
Electronic Devices ◽  
Pure Copper ◽  
Single Pulse ◽  
Radius Of Curvature ◽  
Ambient Conditions ◽  
Paper Substrate ◽  
Pulse Technique ◽  
Dry Coating ◽  
Coating Method

Inkjet-printed patterns were formed on a paper substrate using anti-oxidant copper nano-ink for application to disposable electronic devices. To prevent substrate damage, the pattern was flash light sintered under ambient conditions using the multi-pulse technique. Pure copper nanoparticles were coated with 1-octanethiol for oxidation resistance using the dry-coating method. Mixing these with 1-octanol solvent at a concentration of 30 wt% produced the copper nano-ink. Photo paper was used as the substrate. The contact angle between the photo paper and copper nano-ink was 37.2° and the optimal energy density for the multi-pulse flash light sintering technique was 15.6 J/cm2. Using this energy density, the optimal conditions were an on-time of 2 ms (duty cycle of 80%) for three pulses. The resistivity of the resulting pattern was 2.8 × 10−7 Ω∙m. After bending 500 times to a radius of curvature of 30 mm, the relative resistance (ΔR/R0) of the multi-pulse flash light-sintered pattern hardly changed compared to that of the unbent pattern, while the single-pulse-sintered pattern showed dramatic increase by 8-fold compared to the unbent pattern. Therefore, the multi-pulse light sintering technique is a promising approach to produce an inkjet-printed pattern that can be applied to disposable electronic devices.

A single-pulse ruby laser with a phototropic ruby Q-switch

1970 ◽  
Vol 12 (4) ◽  
pp. 572-573
Author(s):  
B. B. Boiko ◽  
N. S. Petrov ◽  
V. V. Valyavko ◽  
V. A. Krivosheev ◽  
V. E. Leparskii
Keyword(s):  
Ruby Laser ◽  
Single Pulse

Evaluation of Synchronous Twin Pulse Technique for Shock Wave Lithotripsy: Determination of Optimal Parameters for In Vitro Stone Fragmentation

2003 ◽  
Vol 170 (6) ◽  
pp. 2190-2194 ◽  
Author(s):  
KHALED Z. SHEIR ◽  
NASIM ZABIHI ◽  
DAVID LEE ◽  
JOEL M. TEICHMAN ◽  
JAMIL REHMAN ◽  
...  
Keyword(s):  
Shock Wave ◽  
Shock Wave Lithotripsy ◽  
Optimal Parameters ◽  
Pulse Technique ◽  
Stone Fragmentation
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