Knudsen cell mass spectrometry

Atomization energies of CP, CgP, CPj, and CgPg have been determined using high-temperature Knudsen cell mass spectrometry. ... 

III, F. More phase diagrams of complex fluorides have been explored using Knudsen cell mass spectrometry (13, 15), and electron impact studies have yielded enthalpies and bond energies (1,3). The heat of formation of MoFmi) has been confirmed (12). Solid state cells have been used with lanthanide trifluorides (24) and NaNiF3 (21). 

Fraser D. G, Rammensee W., and Hardwick A. (1985). Determination of the mixing properties of molten silicates by Knudsen cell mass spectrometry, II The system (Na-K)AlSi40io and (Na-K)AlSi50i2. Geochim. Cosmochim. Acta, 49 349-359. 

Fraser D. G, Rammensee W., and Jones R. H. (1983). The mixing properties of melts in the system NaAlSi306-KAlSi206 determined by Knudsen-Cell Mass Spectrometry. Bull Mineral, 106 111-117. 

Knudsen cell mass spectrometers play a role in diagnostics of evaporated samples at high temperature whereby the species present with various m/z ratios are monitored continuously. In spite of the importance of Knudsen cell mass spectrometry, no commercial mass spectrometers are now available. 

S. Smoes, C. E. Myers, and J. Drowart, Chem. Phys. Lett., 8,10 (1971). Determination of the Atomization Energies of CP, C2P, CP2, and C2P2 by High Temperature Knudsen Cell Mass Spectrometry. 

The gaseous equilibria shown in equations (1)—(3) have been studied by Knudsen-cell mass spectrometry,191 and values have been obtained for the dissociation energies (D%) and heats of formation of AsP and BiP (Do 429.7 and 278 kJ mol-1 AH°298 187.0 and 262 kJ mol-1, respectively). 

Bonds to Sulphur or Selenium.— Values for the dissociation energies (Do) of the diatomic species PS, PSe, and PTe, determined by Knudsen-cell mass spectrometry, are 438, 360, and 294 kJ mol 1, respectively.583 Some 3lP n.m.r. data for P4S3 in the polycrystalline state584 and in a nematic phase are now available.585 Displacement of one carbon monoxide group from Mo(CO)6 occurs on reaction with P4S3, giving (84),586 and crystal data show... 

SMO/PAT] Smoes, S., Pattje, W. R., Drowart, J., Thermodynamic study of the vaporization of manganese metal and manganese selenide by Knudsen-cell mass spectrometry, High Temp. ScL, 10, (1978), 109-130. Cited on pages 338, 339, 340, 551, 552. 

GIBMS = guided ion beam mass spectrometry HPMS = high pressure mass spectrometry ICR = ion cyclotron resonance mass spectrometry KC-MS = Knudsen cell-mass spectrometry. cData at 298 K. 

The heat of reaction in the formation of ZrF3(g) from Ca(g) and ZrF4(g) was examined by Murad and Flildenbrand [66MUR/HIL], between 1665 and 1747 K, using Knudsen cell mass spectrometry taking ionising energies of less than 20 eV only. The reaction studied was ... 

The heat of reaction in the formation of ZrCl3(g), ZrCl2(g) and ZrCl(g) from a number of pathways have been examined by Potter [70POT] using Knudsen cell mass spectrometry. For the formation of ZrCl3(g), the reactions studied were ... 

Kleinschmidt et al. [78KLE/CUB] studied the thermodynamics of the gaseous zirconium iodides at elevated temperatures using Knudsen cell mass spectrometry. The formation of Zrl3(g) over the range 1100 to 1400 K was studied using two independent reaction mechanisms ... 

Knudsen cell, mass spectrometry 1515-1690 Not specified Rocabois et al. (1996) [125]... 

The dissociation energies (Aq) for the gaseous metallic species AlAg and AlAu have been obtained by Knudsen-cell mass spectrometry. The values were 180 9 and 325 13 kJ mol , respectively, in line with relative bond strengths in the alloys. Similar data have been obtained by this technique for AlAua (506.3 25.1 kJ mol ) and AlsAu (460.2 20.9 kJ mol ). ... 

The vapours above As-B mixtures have been examined by Knudsen-cell mass spectrometry. BAs and B< As vapourize with decomposition to give a vapour consisting chiefly of As2 and AS4. The following heats of formation were deduced AHf(BAs 298 K) =-8.5 2.0, AHpCB As 298 K) =-16.6 2.0 kcal mol . "... 

Pro] Knudsen cell mass spectrometry Two alloys CriaFcigNivi at 1220 and 1620°C Cri4Fe26Ni6o at 1235 and 1635°C... 

Bro] Knudsen cell mass spectrometry Fci ,(Nio.g6Cro.i4) 0 solid state y phase)... 

Sop] Sopousek, J., Vrestal, J., Phase Equilibria in the Fe-Cr-Ni and Fe-Cr-C Systems , Z. Metallkd., 85(2), 111-115 (1994) (Experimental, Phase Diagram, Phase Relations, 20) [1995Bro] Broz, R, Vrestal, J., Tomiska, J., Computer-Aided Thermodyn. of Solid Ternary Fei ((Nio.g6Cro.i4)x Alloys by Knudsen Cell Mass Spectrometry , Ber. Bunsen-Ges. Phys. Chem., 99(6), 802-806 (1995) (Experimental, Thermodyn., 11)... 

Yam] Melting, Knudsen cell-mass spectrometry in liquid phase, 1600°C... 

Meloni, G., Thomson, L.M., Gingerich, K.A. Structure and thermodynamic stability of the OsC and OsC2 molecules by theoretical calculations and by Knudsen cell mass spectrometry, J. Chem. Phys. 115(2001)4496-4501. 

AFT ix = -2670 Coo.4Cro.4Feo.2 Knudsen-cell mass spectrometry [1982Arg]... 

Fra] Activity measurements by Knudsen cell mass spectrometry Condensation processes in the solar nebula... 

Toml] Knudsen efrusion cells mefliod/Activities measurements / Computer-aided Knudsen cell mass spectrometry 1577°C / FC tNi cCoi 2x liquid ternary alloys... 

Fra] Fraser, D.G., Rammensee, W., Activity Measurements by Knudsen cell Mass Spectrometry the System Fe-Co-Ni and Implications for Condensation Processes in the Solar Nebula , Geochim. Cosmochim. Acta, 46, 549-556 (1980) as quoted in [2000Tse] by [2005Mor] [1980Sri] Srivastava, S.C., Electrodeposition of Ternary Alloys Developments in 1972 - 1978 , Surf. Technol., 10, 237-257 (1980) (Electrochem., Magn. Prop., Review, 121)... 

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