TITLE

Charged particle velocity map image reconstruction with one-dimensional projections of spherical functions

AUTHOR(S)
Gerber, Thomas; Liu, Yuzhu; Knopp, Gregor; Hemberger, Patrick; Bodi, Andras; Radi, Peter; Sych, Yaroslav
PUB. DATE
March 2013
SOURCE
Review of Scientific Instruments;Mar2013, Vol. 84 Issue 3, p033101
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Velocity map imaging (VMI) is used in mass spectrometry and in angle resolved photo-electron spectroscopy to determine the lateral momentum distributions of charged particles accelerated towards a detector. VM-images are composed of projected Newton spheres with a common centre. The 2D images are usually evaluated by a decomposition into base vectors each representing the 2D projection of a set of particles starting from a centre with a specific velocity distribution. We propose to evaluate 1D projections of VM-images in terms of 1D projections of spherical functions, instead. The proposed evaluation algorithm shows that all distribution information can be retrieved from an adequately chosen set of 1D projections, alleviating the numerical effort for the interpretation of VM-images considerably. The obtained results produce directly the coefficients of the involved spherical functions, making the reconstruction of sliced Newton spheres obsolete.
ACCESSION #
86446675

 

Related Articles

  • X-ray intravital microscopy for functional imaging in rat hearts using synchrotron radiation coronary microangiography. Umetani, K.; Fukushima, K. // Review of Scientific Instruments;Mar2013, Vol. 84 Issue 3, p034302 

    An X-ray intravital microscopy technique was developed to enable in vivo visualization of the coronary, cerebral, and pulmonary arteries in rats without exposure of organs and with spatial resolution in the micrometer range and temporal resolution in the millisecond range. We have refined the...

  • Compact prototype apparatus for reducing the circle of confusion down to 40 nm for x-ray nanotomography. Kim, Jungdae; Lauer, K.; Yan, H.; Chu, Y. S.; Nazaretski, E. // Review of Scientific Instruments;Mar2013, Vol. 84 Issue 3, p035006 

    We have constructed a compact prototype apparatus for active correction of circle of confusion during rotational motion. Our system combines fiber optic interferometry as a sensing element, the reference cylinder along with the nanopositioning system, and a robust correction algorithm. We...

  • Theory of collisional electron spectroscopy for gas analysis. Panasyuk, George Y.; Tsyganov, Alexander B. // Journal of Applied Physics;Jun2012, Vol. 111 Issue 11, p114503 

    We develop an analytical model for a proposed method of gas analysis. The method is based on collisional electron spectroscopy, where a limited number of electron scatterings on gas molecules inside the analyzer is permitted. The proposed method can be used to identify impurity species in a main...

  • Probing molecular symmetry effects in the ionization of N2 and O2 by intense laser fields. Okunishi, M.; Shimada, K.; Prümper, G.; Mathur, D.; Ueda, K. // Journal of Chemical Physics;8/14/2007, Vol. 127 Issue 6, p064310 

    High-resolution electron spectroscopy is used to explore the role played by molecular symmetry in determining the morphology of the energy spectra of electrons ejected when N2 and O2 are irradiated by intense laser fields. In O2, the low-energy part of the electron spectrum is curtailed due to...

  • Reduction of X-ray generation in high-intensity laser ion acceleration. Aurand, Bastian; Kuschel, Stephan; Rödel, Christian; Jäckel, Oliver; Polz, Jens; Elkin, Bentsian; Zhao, Huanyu; Karmakar, Anupam; Gibbon, Paul; Kaluza, Malte; Kuehl, Thomas // Applied Physics B: Lasers & Optics;Feb2015, Vol. 118 Issue 2, p247 

    In this paper, we report on measurements of bremsstrahlung in laser ion acceleration experiments from ultra-thin, polymer-based target foils. The influence of laser polarization on the generated $$\gamma$$ radiation, the maximum achievable proton energy and the total proton number is...

  • Residual Gas X-ray Beam Position Monitor Development for PETRA III. Ilinski, P.; Hahn, U.; Schulte-Schrepping, H.; Degenhardt, M. // AIP Conference Proceedings;2007, Vol. 879 Issue 1, p782 

    The development effort is driven by the need for a new type of x-ray beam position monitor (XBPM), which will detect the centre of gravity of the undulator beam. XBPMs based on the ionization of a residual gas are considered being the candidate for this future “white” undulator beam...

  • Soft X-Ray Photoemission Electron Microscopy Station with Polarized Radiation. Wei, D. H.; Hsu, Y. J.; Yin, G. C.; Wu, Y. S.; Chuang, S. C.; Tsang, K. L.; Ou, J. Y.; Wu, J. C.; Warwick, T. // AIP Conference Proceedings;2004, Vol. 705 Issue 1, p905 

    We have established a soft x-ray photoemission electron microscopy station at BL05B elliptically polarized undulator beamline, which provides an average photon flux of 1× 1012 photons/sec in energies from 60 to 1400 eV with an resolving power of greater than 100000. Combination of the...

  • Laser technology: Source of coherent kiloelectronvolt X-rays. Seres, J.; Seres, E.; Verhoef, A. J.; Tempea, G.; Streli, C.; Wobrauschek, P.; Yakovlev, V.; Scrinzi, A.; Spielmann, C.; Krausz, F. // Nature;2/10/2005, Vol. 433 Issue 7026, p596 

    Generating X-rays that have the properties of laser light has been a long-standing goal for experimental science. Here we describe the emission of highly collimated, spatially coherent X-rays, at a wavelength of about 1 nanometre and at photon energies extending to 1.3 kiloelectronvolts, from...

  • Resonant Soft-x-ray Emission Spectroscopy of Liquids. Guo, J.-H.; Augustsson, A.; Englund, C.-J.; Nordgren, J.; Warwick, T. // AIP Conference Proceedings;2004, Vol. 705 Issue 1, p1066 

    We present now a possible way to carry out soft-x-ray fluorescence spectroscopy of liquids. The liquid cell has a window to attain compatibility with UHV conditions of the spectrometer and beamline, The synchrotron radiation enters the liquid cell through a 100 nm-thick silicon nitride window...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics