The isomer shift of elemental iodine under high pressure

M. Pasternak; J. N. Farrell; R. D. Taylor

doi:10.1016/0038-1098(87)90128-1

The isomer shift of elemental iodine under high pressure

M. Pasternak^*, J. N. Farrell, R. D. Taylor

^*Corresponding author for this work

Los Alamos National Laboratory

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

The Mossbauer isomer shift (IS) in elemental ¹²⁹I was measured as a function of pressure to 30 GPa unsing diamond anvil cells. The IS increases gradually with pressure reaching a value of ΔIS = 0.56(3) mm sec^-1 at P > 16 GPa. No discontinuity was observed at P = 21 GPa where a crystallographic phase transition has been reported. Using the experimental V(P) relation, the IS dependence on -ℓnV was found to be linear to the highest pressure. The dρ{variant}(0) dℓnV value for elemental I₂ was found to be -6.6(2) a^-3₀. The volume dependence of the p-holes is deduced resulting in a 5s²5p^4.62 configuration at the highest pressure. The systematics of dρ{variant}(0) dℓnV for the 5sp elements from βSn to Xe are discussed.

Original language	English
Pages (from-to)	409-411
Number of pages	3
Journal	Solid State Communications
Volume	61
Issue number	7
DOIs	https://doi.org/10.1016/0038-1098(87)90128-1
State	Published - Feb 1987
Externally published	Yes

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title = "The isomer shift of elemental iodine under high pressure",

abstract = "The Mossbauer isomer shift (IS) in elemental 129I was measured as a function of pressure to 30 GPa unsing diamond anvil cells. The IS increases gradually with pressure reaching a value of ΔIS = 0.56(3) mm sec-1 at P > 16 GPa. No discontinuity was observed at P = 21 GPa where a crystallographic phase transition has been reported. Using the experimental V(P) relation, the IS dependence on -ℓnV was found to be linear to the highest pressure. The dρ{variant}(0) dℓnV value for elemental I2 was found to be -6.6(2) a-30. The volume dependence of the p-holes is deduced resulting in a 5s25p4.62 configuration at the highest pressure. The systematics of dρ{variant}(0) dℓnV for the 5sp elements from βSn to Xe are discussed.",

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T1 - The isomer shift of elemental iodine under high pressure

AU - Pasternak, M.

AU - Farrell, J. N.

AU - Taylor, R. D.

PY - 1987/2

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N2 - The Mossbauer isomer shift (IS) in elemental 129I was measured as a function of pressure to 30 GPa unsing diamond anvil cells. The IS increases gradually with pressure reaching a value of ΔIS = 0.56(3) mm sec-1 at P > 16 GPa. No discontinuity was observed at P = 21 GPa where a crystallographic phase transition has been reported. Using the experimental V(P) relation, the IS dependence on -ℓnV was found to be linear to the highest pressure. The dρ{variant}(0) dℓnV value for elemental I2 was found to be -6.6(2) a-30. The volume dependence of the p-holes is deduced resulting in a 5s25p4.62 configuration at the highest pressure. The systematics of dρ{variant}(0) dℓnV for the 5sp elements from βSn to Xe are discussed.

AB - The Mossbauer isomer shift (IS) in elemental 129I was measured as a function of pressure to 30 GPa unsing diamond anvil cells. The IS increases gradually with pressure reaching a value of ΔIS = 0.56(3) mm sec-1 at P > 16 GPa. No discontinuity was observed at P = 21 GPa where a crystallographic phase transition has been reported. Using the experimental V(P) relation, the IS dependence on -ℓnV was found to be linear to the highest pressure. The dρ{variant}(0) dℓnV value for elemental I2 was found to be -6.6(2) a-30. The volume dependence of the p-holes is deduced resulting in a 5s25p4.62 configuration at the highest pressure. The systematics of dρ{variant}(0) dℓnV for the 5sp elements from βSn to Xe are discussed.

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VL - 61

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JF - Solid State Communications

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The isomer shift of elemental iodine under high pressure

Abstract

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