scholarly journals A modified time-of-flight method for precise determination of high speed ratios in molecular beams

2016 ◽  
Vol 87 (2) ◽  
pp. 023102 ◽  
Author(s):  
A. Salvador Palau ◽  
S. D. Eder ◽  
T. Kaltenbacher ◽  
B. Samelin ◽  
G. Bracco ◽  
...  
Keyword(s):  
High Speed ◽  
Time Of Flight ◽  
Molecular Beams ◽  
Precise Determination ◽  
Time Of Flight Method

Measurements of Velocity Distribution in Potassium Molecular Beams by Time-of-Flight Method

1971 ◽  
Vol 10 (5) ◽  
pp. 543-550 ◽  
Author(s):  
Kumasaburo Kodera ◽  
Isao Kusunoki ◽  
Kunihiko Horinouchi ◽  
Kimio Isa ◽  
Masahiro Yoshihara
Keyword(s):  
Velocity Distribution ◽  
Time Of Flight ◽  
Molecular Beams ◽  
Time Of Flight Method

scholarly journals Superluminal Motion in CTA 102

1989 ◽  
Vol 134 ◽  
pp. 529-530
Author(s):  
Ann E. Wehrle
Keyword(s):  
Flux Density ◽  
High Speed ◽  
Low Frequency ◽  
Precise Determination ◽  
Flux Variation ◽  
Low Frequencies ◽  
Superluminal Motion ◽  
Low Frequency Variability ◽  
Expansion Speed

Sholomitskii (1965) discovered that the flux density of the quasar CTA 102 varies at low frequencies on a timescale of a few months. Low-frequency variability can be explained by “superluminal flux variation” (Romney et al. 1984): If the intrinsic brightness of a component moving in a relativistically beamed source varies by only a few percent, the observer sees its flux density change by a much larger factor δ3-α when the optically thin blob moves almost directly toward the observer. Such a relativistically beamed source is likely to exhibit superluminal motion if studied with sufficient resolution and sensitivity. Superluminal motion in CTA 102 was discovered by Bååth (1987) who concluded on the basis of maps made at three epochs at a frequency of 932 MHz that two components were separating at a rate of 0.65 milliarcseconds (mas) per year. Using a redshift z = 1.037 and H0 = 100 km s−1 Mpc−1, q0 = 0.5, this expansion speed corresponds to (18 ± 4)h−1c. The extraordinarily high speed led us to make VLBI images of the source at a higher frequency in order to increase the resolution and make a more precise determination of the speed.

Determination of trapped-ion kinetic energy by the time-of-flight method for free ejected ions

1995 ◽  
Vol 51 (3) ◽  
pp. 2294-2300 ◽  
Author(s):  
M. Vedel ◽  
M. Knoop ◽  
D. Lunney ◽  
I. Rebatel ◽  
F. Vedel
Keyword(s):  
Kinetic Energy ◽  
Time Of Flight ◽  
Trapped Ion ◽  
Ion Kinetic Energy ◽  
Time Of Flight Method
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