maser

Definitions

  • WordNet 3.6
    • n maser an acronym for microwave amplification by stimulated emission of radiation; an amplifier that works on the same principle as a laser and emits coherent microwave radiation
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Webster's Revised Unabridged Dictionary
    • maser (Physics) An electronic device producing coherent monochromatic microwave radiation; it produces less noise than other forms of microwave oscillator.
    • maser Same as Mazer.
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Century Dictionary and Cyclopedia
    • n maser An obsolete form of mazer.
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Etymology

Webster's Revised Unabridged Dictionary
from M,icrowave A,mplification by S,timulated E,mission of R,adiation

Usage

In literature:

The first of the race who comes into prominence is Maser Djawah Ebn Djeldjal, of Basra.
"Old-Time Makers of Medicine" by James J. Walsh
This amount, together with L120 given by Baron Maseres, was applied to the building of a schoolroom.
"Mayfair, Belgravia, and Bayswater" by Geraldine Edith Mitton
Maseres went as Attorney-General to Quebec; and was appointed Cursitor Baron of our Exchequer in 1773.
"A Budget of Paradoxes, Volume I (of II)" by Augustus De Morgan
The greatest addition by gift was made by the Baron F. Maseres in 1825.
"Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 5" by Various
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In news:

A Maser to make Fangio proud.
From Kara Maser, director of operations.
Merle Maser was looking for a way to attract new clients to his pet business in a difficult economy.
This week Dr Helen Caldicott talks to Chris Maser , author and international consultant in forest ecology and sustainable forestry practices.
Maser Consulting merging with KZA Engineering.
At Long Last, a Room-Temperature Maser .
Maser core consisting of a pink crystal of pentacene-doped p -terphenyl surrounded by a clear sapphire ring.
Masers, the microwave ancestor of the laser, have nowhere near the modern-day utility and ubiquity of the laser, in part because they require cryogenic cooling.
Finally, A Room-Temperature Maser .
Nearly 60 years after the first working maser , three British scientists have devised an optically pumped solid-state maser that operates at room temperature.
Now, nearly 60 years after the first working maser, three British scientists have devised an optically pumped solid-state maser that operates at room temperature ( Nature 488, 353 ).
Nearly 60 years after the first working maser, three British scientists have devised an optically pumped solid-state maser that operates at room temperature .
Chase Maser (left) and Robert Cicchini play a son and father who set off to recreate Marquette and Joliet's 1,000-mile canoe trip from Upper Michigan to the Mississippi in "WaterWalk.".
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In science:

Assuming that the “thermal” Zeeman equation can be used to estimate | ~B | for OH masers, our estimated fields range from 0.2 to 2 mG.
OH Zeeman Magnetic Field Detections Toward Five Supernova Remnants Using the VLA
With these promising results in mind, we have performed 1720 MHz Zeeman studies toward five more of the 17 SNRs found in surveys by Frail et al. (1996) and Green et al. (1997) to contain OH (1720 MHz) masers using the NRAO3 VLA.
OH Zeeman Magnetic Field Detections Toward Five Supernova Remnants Using the VLA
The strongest maser channel in each line data set was then self-calibrated and the solutions were applied to each channel.
OH Zeeman Magnetic Field Detections Toward Five Supernova Remnants Using the VLA
The positions, peak flux densities, and an upper limit to the maser spot sizes are reported in Table 2.
OH Zeeman Magnetic Field Detections Toward Five Supernova Remnants Using the VLA
Stokes I spectrum at the peak pixel of each maser spot was fit with a single Gaussian in the spectral domain using GIPSY, to obtain each maser’s center velocity (v) and linewidth (∆vF W HM ).
OH Zeeman Magnetic Field Detections Toward Five Supernova Remnants Using the VLA
In addition, none of the observed OH (1720 MHz) masers appear to have undergone significant changes in flux density or position since the detection experiments were performed in 1994.
OH Zeeman Magnetic Field Detections Toward Five Supernova Remnants Using the VLA
As noted in §2, none of the maser spots have been resolved at the resolutions listed in Table 1.
OH Zeeman Magnetic Field Detections Toward Five Supernova Remnants Using the VLA
The validity of the thermal Zeeman formulation for the magnetic field in masers along with the θ dependence and magnitude of C is discussed in §4.1.
OH Zeeman Magnetic Field Detections Toward Five Supernova Remnants Using the VLA
These Bθ field estimates were calculated using the thermal Zeeman equation and may overestimate the maser fields according to the maser theory of Elitzur (1998).
OH Zeeman Magnetic Field Detections Toward Five Supernova Remnants Using the VLA
A profile showing Stokes Q and U toward this maser is shown in Figure 3.
OH Zeeman Magnetic Field Detections Toward Five Supernova Remnants Using the VLA
The locations of the two W51C OH (1720 MHz) masers are indicated by the white (+) symbols.
OH Zeeman Magnetic Field Detections Toward Five Supernova Remnants Using the VLA
We have assumed until now that magnetic fields can be calculated from the Zeeman effect in masers using the same formalism that has been developed for thermal radiation (i.e.
OH Zeeman Magnetic Field Detections Toward Five Supernova Remnants Using the VLA
One recent analytical study of the polarization properties of masers by Elitzur (1998) has suggested that the usual thermal Zeeman formulation, V = Z C | ~B | dI/dν with C a constant, may not be valid for unsaturated masers.
OH Zeeman Magnetic Field Detections Toward Five Supernova Remnants Using the VLA
Note, that the VLBA OH maser data have three times the spectral resolution of the VLA data.
OH Zeeman Magnetic Field Detections Toward Five Supernova Remnants Using the VLA
This was also found to be the case in a OH (1720 MHz) maser study of the galactic center by Yusef-Zadeh et al. (1999a).
OH Zeeman Magnetic Field Detections Toward Five Supernova Remnants Using the VLA
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