Room-temperature magnesium vapor cell for spectroscopy on the1S 0 -3P 1 intercombination line

2007 ◽  
Author(s):  
A. E. Bonert ◽  
V. I. Baraulia ◽  
A. M. Shiliov ◽  
A. N. Goncharov
Laser Physics ◽  
2019 ◽  
Vol 29 (3) ◽  
pp. 035701
Author(s):  
Linjie Zhang ◽  
Yue Jia ◽  
Mingyong Jing ◽  
Liping Guo ◽  
Hao Zhang ◽  
...  

2017 ◽  
Vol 25 (19) ◽  
pp. 22510 ◽  
Author(s):  
Jieying Wang ◽  
Jiandong Bai ◽  
Jun He ◽  
Junmin Wang

Author(s):  
Bertus Jordaan ◽  
Connor Kupchak ◽  
Thomas Mittiga ◽  
Mehdi Namazi ◽  
Christian Nölleke ◽  
...  

2013 ◽  
Vol 87 (4) ◽  
Author(s):  
Atreju Tauschinsky ◽  
Richard Newell ◽  
H. B. van Linden van den Heuvell ◽  
R. J. C. Spreeuw

2003 ◽  
Vol 18 (8) ◽  
pp. 1960-1967 ◽  
Author(s):  
Toru H. Okabe ◽  
Sachiko Yamamoto ◽  
Yoshihiro Kayanuma ◽  
Masafumi Maedaaff

To develop an effective process for the recovery of precious metals from scrap, we investigated a new platinum extraction process using alloy formation by magnesium vapor and successive leaching with an aqueous solution. Pure platinum plates were reacted with magnesium vapor at constant temperatures ranging between 873 and 1173 K for 3 h, and Mg–Pt alloy samples were synthesized. The obtained Mg–Pt alloy was then dissolved in aqua regia or in an aqueous HCl solution at room temperature. Platinum was recovered from the leaching solution by conventional precipitation technique, and the platinum obtained by each process was analyzed chemically. It was found that 94% of the platinum was recovered by this process. After Mg vapor treatment, 100% of the platinum was dissolved when kept in aqua regia for 1 h, whereas only 25% of untreated pure platinum was dissolved when kept in aqua regia for 4 h.


2020 ◽  
Vol 10 (22) ◽  
pp. 8178
Author(s):  
Zerong Wang ◽  
Xiaokai Hou ◽  
Jiandong Bai ◽  
Junmin Wang

The measurement of the cesium (Cs) 5p67d2D5/2 excited state’s hyperfine splitting intervals and hyperfine interaction constants was experimentally investigated using a ladder-type (852 nm + 698 nm) three-level Cs system (5p66s2S1/2–5p66p2P3/2–5p67d2D5/2) with a room-temperature Cs atomic vapor cell. By scanning the 698 nm coupling laser’s frequency, the Doppler-free high-resolution electromagnetically-induced transparency (EIT)-assisted double-resonance optical pumping (DROP) spectra were demonstrated via transmission enhancement of the locked 852 nm probe laser. The EIT-assisted DROP spectra were employed to study the hyperfine splitting intervals for the Cs 5p67d2D5/2 excited state with a room-temperature Cs atomic vapor cell, and the radio-frequency modulation sideband of a waveguide-type electro-optic phase modulator (EOPM) was introduced for frequency calibration to improve the accuracy of frequency interval measurement. The existence of EIT makes the DROP spectral linewidth much narrower, and it is very helpful to significantly improve the spectroscopic resolution. Benefiting from the higher signal-to-noise ratio (SNR) and much better resolution of the EIT-assisted DROP spectra, the hyperfine splitting intervals between the hyperfine folds of (F” = 6), (F” = 5), and (F” = 4) of the Cs 5p67d2D5/2 state (HFS6″–5″ = −10.60(17) MHz and HFS5″–4″ = −8.54(15) MHz) were measured and, therefore, the magnetic dipole hyperfine interaction constant (A = −1.70(03) MHz) and the electrical quadrupole hyperfine interaction constant (B = −0.77(58) MHz) were derived for the Cs 5p67d2D5/2 state. These constants constitute an important reference value for an improvement of the precise measurement and determination of basic physical constants.


2005 ◽  
Vol 76 (12) ◽  
pp. 123110 ◽  
Author(s):  
Christopher J. Erickson ◽  
Brian Neyenhuis ◽  
Dallin S. Durfee

Author(s):  
J. E. Doherty ◽  
A. F. Giamei ◽  
B. H. Kear ◽  
C. W. Steinke

Recently we have been investigating a class of nickel-base superalloys which possess substantial room temperature ductility. This improvement in ductility is directly related to improvements in grain boundary strength due to increased boundary cohesion through control of detrimental impurities and improved boundary shear strength by controlled grain boundary micros true tures.For these investigations an experimental nickel-base superalloy was doped with different levels of sulphur impurity. The micros tructure after a heat treatment of 1360°C for 2 hr, 1200°C for 16 hr consists of coherent precipitates of γ’ Ni3(Al,X) in a nickel solid solution matrix.


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