The viscosity of krypton between 25° and 75°C and at pressures up to 2000 atm

Trappeniers, N.J.; Botzen, A.; Oosten, J. Van; Berg, H. van den

doi:10.1016/0031-8914(65)90024-8

Cited by 51 publications

(5 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This formula has the additional flexibility to achieve a better , where the lines are least square fits to the diffusion coefficient data in the range 0.005 < D < 1.0 using equation ( 3) with m = 2. Fluidity, η −1 s data for supercritical krypton at 298 K, taken from [35], are also shown on the figure. The effective packing fraction was calculated from the Lennard-Jones potential σ for Kr (= 0.3633 nm) [36].…”

Section: Resultsmentioning

confidence: 99%

Transport coefficients of soft repulsive particle fluids

Heyes¹,

Brańka²

2008

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

Molecular dynamics computer simulation has been used to compute the self-diffusion coefficient, D, and shear viscosity, η(s), of soft-sphere fluids, in which the particles interact through the soft-sphere pair potential, φ(r) = ϵ(σ/r)(n), where n measures the steepness or stiffness of the potential, ϵ and σ are a characteristic energy and distance, respectively. The simulations were carried out on monodisperse systems for a range of n values from the hard-sphere ([Formula: see text]) limit down to n = 4 over a range of densities. An ideal glass transition value was estimated from the limit where D and [Formula: see text] for each value of n. Nucleation of the crystalline phase was found to intervene prior to the formation of the glass itself, as has been found previously for hard spheres (i.e. [Formula: see text]). With increasing softness the glass transition moves further within the solid part of the phase diagram, as predicted by Cardenas and Tosi (2005 Phys. Lett. A 336 423), although the volume fractions at the glass transition estimated by the current procedure here are systematically lower than the predictions of that study.

show abstract

Section: Resultsmentioning

confidence: 99%

Transport coefficients of soft repulsive particle fluids

Heyes¹,

Brańka²

2008

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

show abstract

“…Johnston and Grilly (37); 0 Kopsch (47); X Rankine (52); V Rietveld et al ( 57); (J Rigby and Smith (58); A Thornton (59)(60)(61)(62)(63)(64)(65)(66)(67); O of the relative accuracy of these two sets of determinations which provide the major body of data on high-temperature viscosities. Both groups of workers used capillary flow methods, The most recent work by Kestin (33,88) on the viscosity of argon and helium has tended to lend some support to the lower values of Da we and Smith (13).…”

Section: Discussionmentioning

confidence: 99%

“…Smith et al (9, 73); Kestin et al (7 5, 33, 39); Flynn et al (20, 24);A Guevara et al(26);Johnston and Grilly(37); 0 Michels et al(47); V Nasinl and Rossi(48); X Ranklne (52); 0 Reynes and Thodos(56);Zi Thornton(59)(60)(61)(62)(63)(64)(65)(66)(67); OTrautz et al (65,76); + Wobser and Muller(8 7) 152 Journal of Chemical and Engineering Data, Vol. 17, No.…”

mentioning

confidence: 99%

Critical reassessment of viscosities of 11 common gases

Maitland¹,

Smith²

1972

J. Chem. Eng. Data

160

View full text Add to dashboard Cite

Recommended values of the coefficients of viscosity of 11 common gases (He, Ne, Ar, Kr, Xe, N2, H2, 02, C02, CH4, air) are given over the temperature range for which reliable data exist. A critical reassessment of all available data confirms the recently expressed view that most of the early measurements of high-temperature viscosities are seriously in error (by up to 8% at 1700K). These results have been rejected in favor of more recent data in establishing the values recommended in this paper and estimated to be accurate to 1.0-1.5%.

show abstract

“…In all cases the error of the extrapolated density values is expected to be less than 1%. Experimental values of the viscosity at high pressures of helium, , neon, , argon, − and krypton − can also be found in the literature for several temperatures. These values have again been extrapolated to 293 K and then fitted to polynomials.…”

mentioning

confidence: 94%

Solvation Ultrafast Dynamics of Reactions. 11. Dissociation and Caging Dynamics in the Gas-to-Liquid Transition Region

Lienau

Zewail

1996

J. Phys. Chem.

View full text Add to dashboard Cite

In this paper we give a full account of the work presented in earlier communications [Lienau et al. Chem. Phys. Lett. 1993, 213, 289; 1994, 218 , 224; J. Chim. Phys. 1995, 92 , 566]. With femtosecond time resolution, studies are presented of the dynamics in real time of an elementary chemical reaction, the dissociation and recombination of iodine in supercritical rare-gas solvents, in the gas-to-liquid transition region. Through pressure variation, the properties of the solvent, helium, neon, argon, or krypton, are changed from those of an essentially ideal gas at low densities to those of a liquidlike fluid at pressures of several thousand bar. Of particular interest here are (i) the impact of solute−solvent interactions on the coherence of the wave packet nuclear motion, (ii) the collision-induced predissociation of the B state, and (iii) the geminate recombination of the atomic fragments and the subsequent vibrational energy relaxation within the A/A‘ states. In helium and neon, the coherence of the vibrational motion persists for many picoseconds, even at pressures of 2000 bar. For pressures between 100 and 2000 bar of helium and neon, the dephasing rate is only weakly affected by the solvent density. In all solvents, the solvent-induced predissociation rate increases nearly linearly with solvent density. In argon at 2500 bar, the predissociation rate reaches 1.05 ps-1. Relative geminate recombination yields for the formation of new A/A‘ state iodine molecules and the time scale for the geminate recombination and the subsequent A/A‘ state vibrational relaxation dynamics are also studied. The solvation and chemical dynamics are examined, using simple analytical models, in relation to the solvent density and polarizability. With the help of molecular dynamics, detailed in the accompanying paper, we present a microscopic picture of the elementary processes under the free and solvation conditions encompassing the different density regimes in the gas-to-liquid transition region.

show abstract

The viscosity of krypton between 25° and 75°C and at pressures up to 2000 atm

Cited by 51 publications

References 7 publications

Transport coefficients of soft repulsive particle fluids

Transport coefficients of soft repulsive particle fluids

Critical reassessment of viscosities of 11 common gases

Solvation Ultrafast Dynamics of Reactions. 11. Dissociation and Caging Dynamics in the Gas-to-Liquid Transition Region

Contact Info

Product

Resources

About