Nuclear resonant scattering at high pressure and high temperature

Zhao, Jiyong; Sturhahn, W.; Lin, Jung‐Fu; Shen, Guoyin; Ercan, E.; Mao, Ho‐kwang

doi:10.1080/08957950412331331727

Cited by 40 publications

(35 citation statements)

References 23 publications

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“…NRIXS signals originate from particular resonant nuclei only, and this complete isotope selec tivity is truly unique among techniques for the study of lattice vibrations. For example, materials surrounding the sample that do not contain resonant nuclei produce no unwanted background, and this feature now permits experiments under extreme pressuretemperature conditions that were impossible before (Lubbers et al, 2000a;Mao et al, 2001Mao et al, , 2004bStruzhkin et al, 2001;Lin et al, 2003Lin et al, , 2004aLin et al, , 2004bLin et al, , 2005bShen et al, 2004;Papandrew et al, 2004;Kobayashi et al, 2004;Zhao et al, 2004). Details on the scattering mechanisms and methodology for NRJXS and SMS have been published elsewhere Sturhahn, 2004).…”

Section: Experimental Methodsmentioning

confidence: 99%

Geophysical applications of nuclear resonant spectroscopy

Sturhahn¹,

Jackson²

2007

Advances in High-Pressure Mineralogy

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We summarize recent developments of nuclear resonant spectroscopy methods, such as nuclear resonant inelastic X-ray scattering and synchrotron Mossbauer spec troscopy, and their uses for the geophysical sciences. The inelastic method provides specific vibrational information, for example, the phonon density of states, and, in combination with compression data, it permits the determination of sound velocities and Gruneisen parameters under high pressure and high temperature. The Moss bauer method provides hyperfine interactions between the resonant nucleus and elec tronic environment, such as isomer shifts, quadrupole splittings, and magnetic fields, which provide important information on valence, spin state, and magnetic ordering.Both methods use a nuclear resonant isotope as a probe and can be applied under high pressure and high temperature. The physical mechanism of nuclear resonant scattering and the specifics in applications to Earth materials are presented with ref erence to several high-pressure studies on iron-bearing compounds.

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Section: Experimental Methodsmentioning

confidence: 99%

Geophysical applications of nuclear resonant spectroscopy

Sturhahn¹,

Jackson²

2007

Advances in High-Pressure Mineralogy

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“…Recently, a short-distance spectrometer of large solid angle coverage has been developed, with which data collection time in HP XES is reduced from hours to only several minutes [238]. The XES technique has been extended to high P-T conditions with laser heated DAC techniques [137,239]. Examples of HP XES include the study of predicted high-spin/low-spin transitions in iron oxides and sulfides, such as(Mg,Fe)O and Fe2O3 [240][241][242], silicate bridgmanites [243,244], and silicate post-bridgmanite [245] to above 100 GPa .…”

Section: Hp X-ray Emission Spectroscopymentioning

confidence: 99%

“…The NRIXS technique has been extended to HP and obtained the DOS of ε-Fe up to over 1 Mbar [63,154] and as a function of pressure and temperature with resistively heating and laser-heating techniques [137,297,298]. The measurement of Debye sound velocity [299,300] distinguishes compression and shear wave velocities as well as their temperature and pressure dependence.…”

Section: Hp Nuclear Resonant Inelastic X-ray Scatteringmentioning

confidence: 99%

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High-pressure studies with x-rays using diamond anvil cells

2016

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Pressure profoundly alters all states of matter. The symbiotic development of ultrahighpressure diamond anvil cells, to compress samples to sustainable multi-megabar pressures; and synchrotron x-ray techniques, to probe materials' properties in situ, has enabled the exploration of rich high-pressure (HP) science. In this article, we first introduce the essential concept of diamond anvil cell technology, together with recent developments and its integration with other extreme environments. We then provide an overview of the latest developments in HP synchrotron techniques, their applications, and current problems, followed by a discussion of HP scientific studies using x-rays in the key multidisciplinary fields. These HP studies include: HP x-ray emission spectroscopy, which provides information on the filled electronic states of HP samples; HP x-ray Raman spectroscopy, which probes the HP chemical bonding changes of light elements; HP electronic inelastic x-ray scattering spectroscopy, which accesses high energy electronic phenomena, including electronic band structure, Fermi surface, excitons, plasmons, and their dispersions; HP resonant inelastic x-ray scattering spectroscopy, which probes shallow core excitations, multiplet structures, and spin-resolved electronic structure; HP nuclear resonant x-ray spectroscopy, which provides phonon densities of state and time-resolved Mössbauer information; HP x-ray imaging, which provides information on hierarchical structures, dynamic processes, and internal strains; HP x-ray diffraction, which determines the fundamental structures and densities of single-crystal, polycrystalline, nanocrystalline, and non-crystalline materials; and HP radial x-ray diffraction, which yields deviatoric, elastic and rheological information. Integrating these tools with hydrostatic or uniaxial pressure media, laser and resistive heating, and cryogenic cooling, has enabled investigations of the structural, vibrational, electronic, and magnetic properties of materials over a wide range of pressure-temperature conditions.

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“…For measured data, the direct use of this expression is often not practical because each ratio can have substantial noise fluctuations. An improvement suggested earlier Shen et al, 2004;Zhao et al, 2004) is to solve the non-linear equation…”

Section: Principle Of the Methodsmentioning

confidence: 99%

High-energy-resolution X-ray monochromator calibration using the detailed-balance principle

Zhao

Sturhahn

2012

J Synchrotron Rad

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A new method is presented to calibrate an X-ray energy scale with sub-meV relative accuracy by using the detailed-balance principle of the phonon creation and annihilation. This method is conveniently used to define or verify the energy scale of high-energy-resolution monochromators that are used in inelastic X-ray scattering and nuclear resonant inelastic X-ray scattering instruments at synchrotron radiation facilities. This method does not rely on sample properties and its precision only depends on the statistical data quality. Well calibrated instruments are essential for reliable comparison of data sets obtained at different synchrotron radiation beamlines, of data with theoretical predictions, and of data from other techniques such as neutron or light scattering. The principle of the detailed-balance method is described in this paper and demonstrated experimentally.

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Nuclear resonant scattering at high pressure and high temperature

Cited by 40 publications

References 23 publications

Geophysical applications of nuclear resonant spectroscopy

Geophysical applications of nuclear resonant spectroscopy

High-pressure studies with x-rays using diamond anvil cells

High-energy-resolution X-ray monochromator calibration using the detailed-balance principle

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