A New Precision Spectroscopy Based Method for Boltzmann Constant Determination and Primary Thermometry

2018 ◽  
Vol 122 (28) ◽  
pp. 6026-6030 ◽  
Author(s):  
Santamaria Amato Luigi ◽  
Mario Siciliani de Cumis ◽  
Daniele Dequal ◽  
Giuseppe Bianco ◽  
Cancio Pastor Pablo
Keyword(s):  
Boltzmann Constant ◽  
Precision Spectroscopy ◽  
Primary Thermometry ◽  
Constant Determination

Experimental set-up for Boltzmann constant determination by equipartition theorem for capacitors

2019 ◽  
Author(s):  
T. M. Mishonov ◽  
A. A. Stefanov ◽  
E. G. Petkov ◽  
I. M. Dimitrova ◽  
V. N. Gourev ◽  
...  
Keyword(s):  
Boltzmann Constant ◽  
Constant Determination ◽  
Equipartition Theorem ◽  
Set Up

scholarly journals Application of cavity ring-down spectroscopy to the Boltzmann constant determination

2011 ◽  
Vol 19 (21) ◽  
pp. 19993 ◽  
Author(s):  
Y. R. Sun ◽  
H. Pan ◽  
C.-F. Cheng ◽  
A.-W. Liu ◽  
J.-T. Zhang ◽  
...  
Keyword(s):  
Boltzmann Constant ◽  
Cavity Ring Down Spectroscopy ◽  
Constant Determination ◽  
Cavity Ring Down

scholarly journals A Boltzmann constant determination based on Johnson noise thermometry

Metrologia ◽  
2017 ◽  
Vol 54 (5) ◽  
pp. 730-737 ◽  
Author(s):  
N E Flowers-Jacobs ◽  
A Pollarolo ◽  
K J Coakley ◽  
A E Fox ◽  
H Rogalla ◽  
...  
Keyword(s):  
Boltzmann Constant ◽  
Johnson Noise ◽  
Noise Thermometry ◽  
Constant Determination ◽  
Johnson Noise Thermometry

THE EFFECT OF COLLISIONS IN PRECISION SPECTROSCOPY

1981 ◽  
Vol 42 (C8) ◽  
pp. C8-29-C8-35
Author(s):  
V. A. Alekseev
Keyword(s):  
Precision Spectroscopy

Blackbody Radiation, Boltzmann Statistics, Temperature, and Thermodynamic Equilibrium

2017 ◽  
Author(s):  
Kelly Chance ◽  
Randall V. Martin
Keyword(s):  
Thermodynamic Equilibrium ◽  
Local Thermodynamic Equilibrium ◽  
Photophysical Properties ◽  
Blackbody Radiation ◽  
Boltzmann Constant ◽  
Noise Sources ◽  
Atmospheric Molecules ◽  
Tightly Coupled ◽  
Boltzmann Statistics ◽  
Planck’S Law

Blackbody radiation, temperature, and thermodynamic equilibrium give a tightly coupled description of systems (atmospheres, volumes, surfaces) that obey Boltzmann statistics. They provide descriptions of systems when Boltzmann statistics apply, either approximately or nearly exactly. These apply most of the time in the Earth’s stratosphere and troposphere, and in other planetary atmospheres as long as the density is sufficient that collisions among atmospheric molecules, rather than photochemical and photophysical properties, determine the energy populations of the ensemble of molecules. Thermodynamic equilibrium and the approximation of local thermodynamic equilibrium are introduced. Boltzmann statistics, blackbody radiation, and Planck’s law are described. The chapter introduces the Rayleigh-Jeans limit, description of noise sources as temperatures, Kirchoff’s law, the Stefan-Boltzmann constant, and Wien’s law.

scholarly journals 422 Million intrinsic quality factor planar integrated all-waveguide resonator with sub-MHz linewidth

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Matthew W. Puckett ◽  
Kaikai Liu ◽  
Nitesh Chauhan ◽  
Qiancheng Zhao ◽  
Naijun Jin ◽  
...  
Keyword(s):  
Quality Factor ◽  
High Capacity ◽  
Precision Spectroscopy ◽  
Narrow Linewidth ◽  
Waveguide Resonator ◽  
Environmental Disturbances ◽  
Fiber Communications ◽  
Intrinsic Quality ◽  
Quality Factor Q ◽  
Quantum Photonics

AbstractHigh quality-factor (Q) optical resonators are a key component for ultra-narrow linewidth lasers, frequency stabilization, precision spectroscopy and quantum applications. Integration in a photonic waveguide platform is key to reducing cost, size, power and sensitivity to environmental disturbances. However, to date, the Q of all-waveguide resonators has been relegated to below 260 Million. Here, we report a Si3N4 resonator with 422 Million intrinsic and 3.4 Billion absorption-limited Qs. The resonator has 453 kHz intrinsic, 906 kHz loaded, and 57 kHz absorption-limited linewidths and the corresponding 0.060 dB m−1 loss is the lowest reported to date for waveguides with deposited oxide upper cladding. These results are achieved through a careful reduction of scattering and absorption losses that we simulate, quantify and correlate to measurements. This advancement in waveguide resonator technology paves the way to all-waveguide Billion Q cavities for applications including nonlinear optics, atomic clocks, quantum photonics and high-capacity fiber communications.

Photooxidation of 1,3-butadiene containing systems: Rate constant determination for the reaction of acrolein with?OH radicals

1980 ◽  
Vol 12 (12) ◽  
pp. 905-913 ◽  
Author(s):  
Andrea Maldotti ◽  
Claudio Chiorboli ◽  
Carlo A. Bignozzi ◽  
Carlo Bartocci ◽  
Vittorio Carassiti
Keyword(s):  
Rate Constant ◽  
Oh Radicals ◽  
Constant Determination
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