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SU-E-T-346: Evaluation of Inverse-Compton Scattering Gamma-Ray Sources for Clinical Use in Radiotherapy. Med Phys 2011. [DOI: 10.1118/1.3612300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Differential photoelectron holography: a new approach for three-dimensional atomic imaging. PHYSICAL REVIEW LETTERS 2002; 88:055504. [PMID: 11863743 DOI: 10.1103/physrevlett.88.055504] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2000] [Indexed: 05/23/2023]
Abstract
We propose differential holography as a method to overcome the long-standing forward-scattering problem in photoelectron holography and related techniques for the three-dimensional imaging of atoms. Atomic images reconstructed from experimental and theoretical Cu 3p holograms from Cu(001) demonstrate that this method suppresses strong forward-scattering effects so as to yield more accurate three-dimensional images of side- and backscattering atoms.
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Spectromicroscopy of Mn distributions in micronodules produced by biomineralization. JOURNAL OF SYNCHROTRON RADIATION 1999; 6:359-361. [PMID: 15263307 DOI: 10.1107/s0909049599001715] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/1998] [Accepted: 01/28/1999] [Indexed: 05/24/2023]
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4
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A scanning transmission x-ray microscope for materials science spectromicroscopy at the advanced light source. REVIEW OF SCIENTIFIC INSTRUMENTS 1998. [PMID: 0 DOI: 10.1063/1.1149041] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
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6
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Development of scanning X-ray microscopes for materials science spectromicroscopy at the Advanced Light Source. JOURNAL OF SYNCHROTRON RADIATION 1998; 5:1090-1092. [PMID: 15263755 DOI: 10.1107/s0909049597014283] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/1997] [Accepted: 10/21/1997] [Indexed: 05/24/2023]
Abstract
The development of two zone-plate microscopes for X-ray spectroscopic analysis of materials is described. This pair of instruments will provide imaging NEXAFS analysis of samples in transmission at atmospheric pressure and imaging XPS and NEXAFS analysis of sample surfaces in a UHV environment.
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Abstract
We analyzed the effects of cold oxygen plasma ashing of neurobiological specimens on different elements with synchrotron spectromicroscopy. Our results demonstrate that while carbon is almost completely removed, phosphorus, calcium, potassium, sulfur, and, to some extent, nitrogen are retained and their relative concentration is enhanced.
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Transitions in the direction of magnetism in Ni/Cu(001) ultrathin films and the effects of capping layers. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:9297-9303. [PMID: 9984663 DOI: 10.1103/physrevb.54.9297] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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9
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Room-temperature magnetic phases of Fe on fcc Co(001) and Ni(001). PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:15332-15340. [PMID: 9980890 DOI: 10.1103/physrevb.52.15332] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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10
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Induced Rh magnetic moments in Fe-Rh and Co-Rh alloys using x-ray magnetic circular dichroism. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:12037-12040. [PMID: 9977967 DOI: 10.1103/physrevb.51.12037] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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11
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Application of photoelectron spectromicroscopy to a systematic study of toxic and natural elements in neurons. JOURNAL OF SYNCHROTRON RADIATION 1995; 2:106-12. [PMID: 16714797 DOI: 10.1107/s0909049594012744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
A systematic photoelectron spectromicroscopy study is presented of the spatial distribution of a toxic element, aluminium, iron or chromium, in neuron cultures, after exposure to a solution of the element. The study was performed by the X-ray secondary-emission microscopy (XSEM) version of photoelectron Spectromicroscopy. The distribution of the elements was investigated with two complementary approaches: digital subtraction imaging and individual X-ray absorption spectra from microscopic areas. The results coherently indicate different localization patterns for different elements, and, in particular, extreme localization of aluminium to a few rare cells identifiable as Purkinje neurons. In the case of iron-exposed specimens, the distribution analysis was extended to naturally present phosphorus, and used to estimate the XSEM sensitivity.
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X-ray magnetic-circular-dichroism study of Fe/V multilayers. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:3293-3296. [PMID: 9979132 DOI: 10.1103/physrevb.51.3293] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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13
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Magnetic properties of Mn/Cu(001) and Mn/Ni(001) c(2 x 2) surface alloys. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:617-620. [PMID: 9977130 DOI: 10.1103/physrevb.51.617] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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14
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Orbital and spin sum rules in x-ray magnetic circular dichroism. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:12672-12681. [PMID: 9975431 DOI: 10.1103/physrevb.50.12672] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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15
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Abstract
Experimental evidence of the preferential uptake of aluminium by GABAergic neurones and glial cells was provided by synchrotron spectromicroscopy studies. We observed rat cerebellar cultures enriched for GABAergic neurones or glial cells exposed to aluminium ions, detecting the presence and identifying the chemical status of aluminium on cell structures.
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Surface-enhanced magnetic moment and ferromagnetic ordering of Mn ultrathin films on fcc Co(001). PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:2963-2969. [PMID: 9976538 DOI: 10.1103/physrevb.50.2963] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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17
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Transition to the perpendicular easy axis of magnetization in Ni ultrathin films found by x-ray magnetic circular dichroism. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:15370-15373. [PMID: 10010657 DOI: 10.1103/physrevb.49.15370] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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18
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Photoelectron diffraction of Si 2p loss spectra: Depth probe for forward-scattering intensities. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:10934-10939. [PMID: 10007394 DOI: 10.1103/physrevb.48.10934] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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19
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Aluminium in rat cerebellar neural cultures. Neuroreport 1993; 4:1175-8. [PMID: 8219011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A systematic microchemical analysis of unstained and uncoated neurone cultures was performed with synchrotron radiation photoemission spectromicroscopy after exposure to an aluminium solution. Clear evidence was found for localized aluminium uptake in a few cells. Their possible identification based on morphology is discussed.
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Structure of Co films grown on Cu(111) studied by photoelectron diffraction. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:9723-9731. [PMID: 10005044 DOI: 10.1103/physrevb.47.9723] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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21
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Photoemission spectromicroscopy of neurons. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 1993; 47:2117-2121. [PMID: 9960232 DOI: 10.1103/physreve.47.2117] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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22
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Abstract
Circularly polarized soft x-rays have been used with an imaging photoelectron microscope to record images of magnetic domains at a spatial resolution of 1 micrometer. The magnetic contrast, which can be remarkably large, arises from the fact that the x-ray absorption cross section at inner-shell absorption edges of aligned magnetic atoms depends on the relative orientation of the photon spin and the local magnetization direction. The technique is element-specific, and, because of the long mean free paths of the x-rays and secondary electrons, it can record images of buried magnetic layers.
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Abstract
We present the first comparative study of the uptake of metal ions by neurons, performed for Zn, Cr, Co, Mo, Al, Ni, Mn and Cd. The study reveals substantial differences in the uptake of different metals, under similar exposure procedures. In particular, we found very large uptakes for aluminium and molybdenum. We also found significant effects of excitatory substances, in particular kainate, as stimulants of uptake of some of the metals.
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Effect of the reference wave in Auger-electron holography. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:9629-9641. [PMID: 10000846 DOI: 10.1103/physrevb.45.9629] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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25
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Theoretical principles of holographic crystallography. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:2480-2494. [PMID: 9999817 DOI: 10.1103/physrevb.44.2480] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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26
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Scattered-wave integral-transform method of holographic-image reconstruction from forward-scattering diffraction patterns. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:14423-14433. [PMID: 9997333 DOI: 10.1103/physrevb.43.14423] [Citation(s) in RCA: 63] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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27
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Scanned-angle x-ray photoemission holography with atomic resolution. PHYSICAL REVIEW. B, CONDENSED MATTER 1990; 42:9199-9202. [PMID: 9995147 DOI: 10.1103/physrevb.42.9199] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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28
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Atomic-resolution electron holography in solids with localized sources. PHYSICAL REVIEW LETTERS 1990; 65:1012-1015. [PMID: 10043083 DOI: 10.1103/physrevlett.65.1012] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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29
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Auger Electron Angular Distributions from Surfaces: Forward Focusing or Silhouettes? Science 1990. [DOI: 10.1126/science.248.4959.1129-c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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30
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Auger Electron Angular Distributions from Surfaces: Forward Focusing or Silhouettes? Science 1990. [DOI: 10.1126/science.248.4959.1129.c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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31
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Huang et al. reply. PHYSICAL REVIEW LETTERS 1990; 64:1183. [PMID: 10041324 DOI: 10.1103/physrevlett.64.1183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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33
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Direct experimental identification of the structure of ultrathin films of bcc iron and metastable bcc and fcc cobalt. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 40:10241-10248. [PMID: 9991569 DOI: 10.1103/physrevb.40.10241] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Quantitative structural determination of metallic film growth on a semiconductor crystal: ( sqrt 3-bar x sqrt 3-bar)R 30 degrees -->(1 x 1) Pb on Ge (111). PHYSICAL REVIEW LETTERS 1989; 62:559-562. [PMID: 10040266 DOI: 10.1103/physrevlett.62.559] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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35
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Real-space interpretation of x-ray-excited Auger-electron diffraction from Cu(001). PHYSICAL REVIEW. B, CONDENSED MATTER 1988; 37:3959-3963. [PMID: 9945026 DOI: 10.1103/physrevb.37.3959] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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36
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Single-target sputter deposition, post-processing and electron spectroscopy of perovskite superconductor thin films. ACTA ACUST UNITED AC 1988. [DOI: 10.1063/1.37082] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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37
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Photoemission study of the valence band of Pb monolayers on Ge(111). PHYSICAL REVIEW. B, CONDENSED MATTER 1987; 36:989-997. [PMID: 9942904 DOI: 10.1103/physrevb.36.989] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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38
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Temperature dependence of photoelectron scattering from a monolayer. PHYSICAL REVIEW. B, CONDENSED MATTER 1986; 34:4386-4389. [PMID: 9940220 DOI: 10.1103/physrevb.34.4386] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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