Broadband Measurement of Quantum Radiation Pressure Noise at Room Temperature

Author(s):  
Jonathan Cripe
2002 ◽  
Vol 66 (10) ◽  
Author(s):  
L. A. S. Machado ◽  
P. A. Maia Neto ◽  
C. Farina

2011 ◽  
Vol 12 (9-10) ◽  
pp. 826-836 ◽  
Author(s):  
Pierre Verlot ◽  
Alexandros Tavernarakis ◽  
Chiara Molinelli ◽  
Aurélien Kuhn ◽  
Thomas Antoni ◽  
...  

2019 ◽  
Vol 14 (1) ◽  
pp. 19-23 ◽  
Author(s):  
Min Jet Yap ◽  
Jonathan Cripe ◽  
Georgia L. Mansell ◽  
Terry G. McRae ◽  
Robert L. Ward ◽  
...  

1999 ◽  
Vol 24 (4) ◽  
pp. 259 ◽  
Author(s):  
Ben C. Buchler ◽  
Malcolm B. Gray ◽  
Daniel A. Shaddock ◽  
Timothy C. Ralph ◽  
David E. McClelland

2020 ◽  
Vol 6 ◽  
pp. 18-22
Author(s):  
V.I. Tovtin ◽  
◽  
V.N. Kolokoltsev ◽  
N.N. Dogadkin ◽  
E.E. Starostin ◽  
...  

In this work, an activation analysis of selenium under its irradiation with bremsstrahlung gamma radiation on a cyclic electron accelerator “Microtron-sT” with an energy of 21 MeV is carried out irradiation was performed at room temperature for 1 h, the gamma-ray intensity was ~ 5·1013 γ/s. Irradiation was carried out on two types of state of the samples (Se) in the form of granules of the (osch), weight 5-10 mg, and microparticles (powder) obtained by mechanical dispersion. Samples in the state of microparticles were suspended in distilled water, in separate polyethylene capsule. On each sample, after irradiation with bremsstrahlung gamma radiation, the spectra of quantum radiation of radionuclides were measured. The measurements were carried out repeatedly in order to observe a decrease in the activity of the samples and their energy gamma spectrum. From the results obtained, it can be seen that all radionuclides are formed on selenium nuclei with different mass numbers by reactions: (γ, n), (γ, p), (γ, 2n), (γ, p + n). The half-life of (T1/2) in identified radionuclides is within 3.9 minutes — 119.8 days. The energy of emitted quanta by radionuclides is equal to from 121.1 to 657 keV. The radiation intensity of radionuclide gamma rays is in the range: 0.25-99.0%.


2013 ◽  
Vol 88 (3) ◽  
Author(s):  
W. Zach Korth ◽  
Haixing Miao ◽  
Thomas Corbitt ◽  
Garrett D. Cole ◽  
Yanbei Chen ◽  
...  

2020 ◽  
Vol 74 (11) ◽  
Author(s):  
Sibilla Di Pace ◽  
Luca Naticchioni ◽  
Martina De Laurentis ◽  
Flavio Travasso

Abstract In this work we study the thermal noise of two monolithically suspended mirrors in a tabletop high-finesse optical cavity. We show that, given suitable seismic filters, such a cavity can be designed to be sensitive to quantum radiation pressure fluctuations in the audio band of gravitational wave interferometric detectors below 1 kHz. Indeed, the thermal noise of the suspensions and of the coatings constitutes the main limit to the observation of quantum radiation pressure fluctuations. This limit can be overcome with an adequate choice of mirror suspension and coating parameters. Finally, we propose to combine two optical cavities, like those modeled in this work, to obtain a tabletop quantum radiation pressure-limited interferometer. Graphical abstract


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