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Journal Article
Metrologia, ISSN 0026-1394, 07/2018, Volume 55, Issue 5, pp. 631 - 636
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 11/2006, Volume 373, Issue 1, pp. 411 - 424
The Australia Telescope Compact Array (ATCA) has been used to image class I methanol masers at 9.9, 25 (a series from J= 2 to 9), 84, 95 and 104 GHz located in... 
ISM: molecules | ISM: jets and outflows | masers | Masers | MOLECULAR-HYDROGEN | ISM : molecules | STAR-FORMING REGIONS | MASSIVE PROTOSTAR | VARIABILITY | H-2 EMISSION | RADIO-CONTINUUM | CH3OH | ASTRONOMY & ASTROPHYSICS | ISM : jets and outflows | HIGH-RESOLUTION | IRAS-16547-4247 | GHZ | Methanol | Evolution | Stars & galaxies | Radio astronomy
Journal Article
IEEE Transactions on Plasma Science, ISSN 0093-3813, 08/2015, Volume 43, Issue 8, pp. 2581 - 2587
When several maser waves having different frequencies are generated in the resonant cavity, the interactions between these waves will occur via the so-called... 
Coherence effect | gliding (spark channel) discharges and coronas | Hydrogen | Resonant frequency | Masers | Cavity resonators | Copper | Sparks | maser generations in H₂/argon mixture | Atomic clocks | maser generations in H/argon mixture | PHYSICS, FLUIDS & PLASMAS | maser generations in H-2/argon mixture | Research | Coherent states
Journal Article
Physical Review Letters, ISSN 0031-9007, 02/2007, Volume 98, Issue 7, p. 070802
We report the most sensitive tests to date of the assumption of local position invariance (LPI) underlying general relativity, based on a 7 yr comparison of... 
ATOMIC CLOCKS | SHIFT | PHYSICS, MULTIDISCIPLINARY | PTB | MASERS | HYDROGEN | GENERAL RELATIVITY THEORY | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS | CESIUM
Journal Article
Astrophysical Journal, ISSN 0004-637X, 08/2013, Volume 773, Issue 1
We present a model in which the 22 GHz H{sub 2}O masers observed in star-forming regions occur behind shocks propagating in dense regions (preshock density... 
LUMINOSITY | MAGNETIC FIELDS | GHZ RANGE | CARBON MONOXIDE | SHOCK WAVES | DENSITY | OXYGEN | HYDROGEN | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | MASERS | STARS | BRIGHTNESS | THICKNESS | WATER
Journal Article
Physical Review A - Atomic, Molecular, and Optical Physics, ISSN 1050-2947, 12/2003, Volume 68, Issue 6, pp. 063807/1 - 063807/14
In a recent paper [Phys. Rev. D 63, 111101 (2001)] we reported a new limit on CPT (charge, parity, and time reversal) and Lorentz violation of the proton by... 
HIGHER-DIMENSIONAL THEORIES | STRINGS | INVARIANCE | ELECTRON | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | TRANSITIONS | MODEL | OPTICS | VIOLATION | VARIATIONS | CPT THEOREM | HYDROGEN | TESTING | SYMMETRY | RESONANCE | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS | ATOMIC AND MOLECULAR PHYSICS | MASERS | ZEEMAN EFFECT | PROTONS | DATA ANALYSIS
Journal Article
Measurement Techniques, ISSN 0543-1972, 11/2018, Volume 61, Issue 8, pp. 767 - 773
Issues in the output signal generation of an atomic clock ensemble and the smooth management of the time scale are considered. Special algorithms are proposed... 
Analytical Chemistry | frequency instability | Measurement Science and Instrumentation | Physical Chemistry | ensemble of atomic clocks | Characterization and Evaluation of Materials | time scale | hydrogen maser | Physics | Signal generation | Algorithms | Masers | Hydrogen masers | Mathematical models | Frequency stability | Atomic clocks
Journal Article
The Astrophysical Journal Letters, ISSN 2041-8205, 05/2011, Volume 732, Issue 1, p. L2
Journal Article
Metrologia, ISSN 0026-1394, 10/2018, Volume 55, Issue 6, pp. 782 - 788
We report on the operation of a Cs fountain primary frequency standard using as a reference for its microwave source a hydrogen maser located in a remote... 
frequency transfer | DISTANCE | INSTRUMENTS & INSTRUMENTATION | PHYSICS, APPLIED | TIME TRANSFER | DISSEMINATION | primary frequency standards | timescales | GPS | atomic clocks | OSCILLATOR | Synthesizers | Optical properties | Frequency standards | Hydrogen masers | Cesium | Microwave heating | Quartz | Oscillators | Time lag | Locking
Journal Article