Accurate determination of the vapor pressure of potassium using optical absorption

Shirinzadeh, B.; Wang, Charles C.

doi:10.1364/ao.22.003265

Cited by 26 publications

(9 citation statements)

References 8 publications

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“…The potassium cell temperature ranged from 295 to 298 K, and there was no need to stabilize or control this temperature during the experiments. The vapor pressure of potassium at a temperature of 296 K is $1.5 lPa and changes by $12% K À1 [27]. The 39 K absorption measurement was arranged in a typical double-pass saturation dip configuration as shown in Fig.…”

Section: Experimental Apparatusmentioning

confidence: 99%

High-accuracy transition frequencies for the O2 A-band

Robichaud

Hodges

Masłowski

et al. 2008

Journal of Molecular Spectroscopy

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Section: Experimental Apparatusmentioning

confidence: 99%

High-accuracy transition frequencies for the O2 A-band

Robichaud

Hodges

Masłowski

et al. 2008

Journal of Molecular Spectroscopy

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“…At a temperature of 296 K, this gives rise to a vapor pressure of 1.5 μPa [23]. Approximately 0.09 mW to 0.15 mW of total optical power (i.e., the sum of all of the comb teeth and the carrier) was injected into the cell, corresponding to a laser intensity of 14 mW/cm 2 to 27 mW/cm 2 .…”

mentioning

confidence: 99%

“…The free-space laser beam was then double-passed through a 46 cm Brewster-angled (for the incoming linearly-polarized beam) sealed glass cell containing atomic potassium metal at natural isotopic abundance (99.5 % purity). At a temperature of 296 K, this gives rise to a vapor pressure of 1.5 µPa [23]. Approximately 0.09 mW to 0.15 mW of total optical power (i.e., the sum of all of the comb teeth and the carrier) was injected into the cell, corresponding to a laser intensity of 14 mW/cm 2 to 27 mW/cm 2 .…”

mentioning

confidence: 99%

Multiplexed sub-Doppler spectroscopy with an optical frequency comb

et al. 2016

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An optical frequency comb generated with an electro-optic phase modulator and a chirped radiofrequency waveform is used to perform pump-probe spectroscopy on the D1 and D2 transitions of atomic potassium at 770.1 nm and 766.7 nm, respectively. With a comb tooth spacing of 200 kHz and an optical bandwidth of 2 GHz the hyperfine transitions can be simultaneously observed. Interferograms are recorded in as little as 5 μs (a timescale corresponding to the inverse of the comb tooth spacing). Importantly, the sub-Doppler features can be measured as long as the laser carrier frequency lies within the Doppler profile, thus removing the need for slow scanning or a priori knowledge of the frequencies of the sub-Doppler features. Sub-Doppler optical frequency comb spectroscopy has the potential to dramatically reduce acquisition times and allow for rapid and accurate assignment of complex molecular and atomic spectra which are presently intractable.

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“…By carefully looking into the number of coating cycles and thickness of each layer, it was found that one wave of the potassium species profile (indicated by the vertical dotted line) fit exactly one pyrolysis cycle at 580°C. Due to the higher volatility of potassium ions compared with sodium ions (vapor pressure of potassium ion is higher than sodium ion where the vapor pressure of K at 600°C is 0.2 atm and sodium is 5.49 × 10 −5 atm 21,22 ), it is reasonable that the intensity of potassium species was found lower while the sodium species was higher at each of the vertical dotted line.…”

Section: Resultsmentioning

confidence: 98%

Titanium Diffusion into (K_0.5Na_0.5)NbO₃ Thin Films Deposited on Pt/Ti/SiO₂/Si Substrates and Corresponding Effects

Goh

Yao

Chen

2009

Journal of the American Ceramic Society

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Lead-free (K 0.5 Na 0.5 )NbO 3 (KNN) thin films were prepared on Pt/Ti/SiO 2 /Si substrates by a sol-gel processing method, and titanium diffusion from the substrates into the KNN films under different thermal treatment conditions were investigated by the secondary ion mass spectroscopy depth profile and X-ray photoelectron spectroscopy surface analysis. Titanium diffusion was evident in all the KNN thin films, which was further aggravated not only by increasing the annealing temperature, but also surprisingly by higher ramping rate attributed to the resulting larger grain boundaries. The pronounced effects of the titanium diffusion and the resulting substitution of Ti 41 for Nb 51 with different valence states on the composition, structure, and electrical properties of the KNN thin films are analyzed and discussed. The results showed that the Ti diffusion from the substrate played a crucial role in affecting the structure and electrical properties of the ferroelectric KNN thin films deposited on Pt/Ti/SiO 2 /Si substrate.

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Accurate determination of the vapor pressure of potassium using optical absorption

Cited by 26 publications

References 8 publications

High-accuracy transition frequencies for the O2 A-band

High-accuracy transition frequencies for the O2 A-band

Multiplexed sub-Doppler spectroscopy with an optical frequency comb

Titanium Diffusion into (K_0.5Na_0.5)NbO₃ Thin Films Deposited on Pt/Ti/SiO₂/Si Substrates and Corresponding Effects

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Accurate determination of the vapor pressure of potassium using optical absorption

Cited by 26 publications

References 8 publications

High-accuracy transition frequencies for the O2 A-band

High-accuracy transition frequencies for the O2 A-band

Multiplexed sub-Doppler spectroscopy with an optical frequency comb

Titanium Diffusion into (K0.5Na0.5)NbO3 Thin Films Deposited on Pt/Ti/SiO2/Si Substrates and Corresponding Effects

Contact Info

Product

Resources

About

Titanium Diffusion into (K_0.5Na_0.5)NbO₃ Thin Films Deposited on Pt/Ti/SiO₂/Si Substrates and Corresponding Effects