Collection of xenon properties


Z = 54

Electron configuration [CRC] 1s(2) 2(s(2)p(6)) 3(s(2)p(6)d(10)) 4(s(2)p(6)d(10)f(0)) 5(s(2)p(6))
Molar mass [CRC] 131.290 g/mol (natural isotope mix)
Melting point (1 atm) [CRC] -111.75 C
Boiling point (1 atm) [CRC] -108.04 C
Critical temp [CRC] 16.58 C
Critical press [CRC] 5.84 MPa
Critical volume [CRC] 118 cm^3/mol
Entropy at 300K, 1atm [CRC] 169.685+-0.003 J/(K mol)
Enthalpy from 0K to 300K, 1 atm [CRC] 6.197+-0.001 kJ/mol
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Van der Waals' constants (gas) [CRC] a=4.192 atm L^2/mol
                                     b=0.05156 L/mol
              The Van der Waals equation is (P + n^2 a / V^2)(V - n b) = nRT
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Dielectric constant [CRC] in gas 1.00126
Dielectric constant in liquid    1.96
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Viscosity (at P=0, claim that changes less than 1% extrapolating at 1atm)
        [CRC]      T(k)  100   200   300   400
             Visc(uPa*s) 8.3  15.4  23.2  30.7
    Note 1uPa*s = 10^-5 poise
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Mean free path [CRC]   P(mmHg)     760        1        0.1        0.01       0.001
                       l(m)     3.5*10^-8  2.6*10^-5 2.6*10^-4  2.6*10^-3  2.6*10^-2
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Molecular diameter from Van der Waals eq. [CRC]  4.02 A
Molecular diameter from heat conductivity [CRC]  3.42 A
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Thermal conductivity (1 atm) [CRC] 
             T(K)                100      200      300      400
             th.cond.(mW/(m*K))  2.0      3.6      5.5      7.3
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Peak scintillation wavelength 178 nm (6.93 eV)

Scintillation yield (liquid) 61000 photons/MeV
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Density of liquid 2.953 g/cm3
Density of STP Xe gas: 5.858 g/l
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Ion mobility in LXe 7.7*10^-4 cm^2/Vs [from Gee et al. J. of Chem. Phys. 77 (1982) 1411]
   Note that this is NOT a function of the ion mass (at first order) but really a 
   universal property of the medium.
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Contamination of Kr-85 in natural Kr is 10^-11 Kr-85/Kr.  Kr-85 is
a fission product and it is produced in nuclear reactors (the above
number is essentially the equilibrium figure for circa 1995)
[from Science 286 (1999) 1139.]
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Contamination of natural Ar from Ar-39 and Ar-42 in air is estimated
to be (Cennini et al NIM A 356 (1995) 526):

- 3.5*10^-21 Ar-39/Ar from cosmic-ray activation
- 3.5*10^-21 Ar-39/Ar from atmospheric nuclear testing

- 1.5*10^-42 Ar-42/Ar from cosmic-ray activation
- 7  *10^-22 Ar-42/Ar from atmospheric nuclear testing (in 1995)
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Keys to references:

CRC: Handbook of chemistry and physics, D.Lide ed, 76th edition (1995-6), Chemical Rubber