TITLE

Absolute detection efficiencies of a microchannel plate detector for 0.5–5 keV neutrals

AUTHOR(S)
Hosokawa, S.; Takahashi, N.; Saito, M.; Haruyama, Y.
PUB. DATE
June 2010
SOURCE
Review of Scientific Instruments;Jun2010, Vol. 81 Issue 6, p063301
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The absolute detection efficiencies of a microchannel plate detector for neutral atoms were measured using the coincidence method for neutralized incident ions and ionized target atoms in electron capture collisions. This method does not require knowledge of the absolute electron-capture rates for determination of the detection efficiencies. Results for Ne, Ar, and Kr atoms at energies of 0.5–5 keV are reported. The detection efficiencies for all atomic species increase concomitantly with increasing impact energy and plateau at the efficiency of about 50%. For low impact energies, the efficiency decreases with increasing mass of the impact atom at a given energy.
ACCESSION #
51848933

 

Related Articles

  • One-ampere, 80-keV, long pulse H- source and accelerator. Kwan, J. W.; Ackerman, G. D.; Anderson, O. A.; Chan, C. F.; Cooper, W. S.; deVries, G. J.; Lietzke, A. F.; Soroka, L.; Steele, W. F. // Review of Scientific Instruments;May86, Vol. 57 Issue 5, p831 

    The design and operation of the surface-conversion H[sup -] ion source and the 80-keV preaccelerator are discussed. Both the source and the preaccelerator, together with the transverse field focusing (TFF) matching and pumping beam transport section (presently being tested ), will be parts of a...

  • High-current negative-ion beam acceleration with a large negative-ion source for large helical device-neutral beam injection system. Takeiri, Y.; Kawamoto, T.; Akiyama, R.; Asano, E.; Tsumori, K.; Oka, Y.; Kaneko, O.; Osakabe, M. // Review of Scientific Instruments;Feb1998, Vol. 69 Issue 2, p977 

    Describes the negative ion production and beam acceleration properties of the second beamline prototype ion source. Installation of the ion source on the neutral beam injection test-stand; Comparison between the extracted electron and negative ion currents; Relationship between the arc power...

  • Diagnostics of nonequilibrium collisional plasma with a thermoanemometric probe. Shuvalov, V.; Kochubei, G.; Lazuchenkov, D. // High Temperature;Feb2011, Vol. 49 Issue 1, p27 

    procedure of diagnostics neutral and charged components of a collisional plasma with the help of a thermoanemometric cylindrical probe is developed. It is shown that temperature and volt-ampere characteristics of a probe make it possible to determine a complex of key kinetic parameters of...

  • Long-pulse beam acceleration of MeV-class H- ion beams for ITER NB accelerator. Umeda, N.; Kashiwagi, M.; Taniguchi, M.; Tobari, H.; Watanabe, K.; Dairaku, M.; Yamanaka, H.; Inoue, T.; Kojima, A.; Hanada, M. // Review of Scientific Instruments;2014, Vol. 85 Issue 2, p1 

    In order to realize neutral beam systems in International Thermonuclear Experimental Reactor whose target is to produce a 1 MeV, 200 A/m² during 3600 s D- ion beam, the electrostatic five-stages negative ion accelerator so-called "MeV accelerator" has been developed at Japan Atomic Energy...

  • Comparative study of beam losses and heat loads reduction methods in MITICA beam source. Sartori, E.; Agostinetti, P.; Dal Bello, S.; Marcuzzi, D.; Serianni, G.; Sonato, P.; Veltri, P. // Review of Scientific Instruments;2014, Vol. 85 Issue 2, p1 

    In negative ion electrostatic accelerators a considerable fraction of extracted ions is lost by collision processes causing efficiency loss and heat deposition over the components. Stripping is proportional to the local density of gas, which is steadily injected in the plasma source; its pumping...

  • Compensations of beamlet deflections for 1 MeV accelerator of ITER NBI. Kashiwagi, Mieko; Taniguchi, Masaki; Umeda, Naotaka; Dairaku, Masayuki; Tobari, Hiroyuki; Yamanaka, Haruhiko; Watanabe, Kazuhiro; Inoue, Takashi; de Esch, H. P. L.; Grisham, Larry R.; Boilson, Deirdre; Hemsworth, Ronald S.; Tanaka, Masanobu // AIP Conference Proceedings;Feb2013, Vol. 1515 Issue 1, p227 

    Compensation methods of beamlet deflections have been studied in a three dimensional (3D) beam analysis using OPERA-3d code for 1 MeV accelerator of the ITER neutral beam injector (NBI). The beamlet deflection is caused by i) magnetic field generated by permanent magnets embedded in the...

  • New determination of the astrophysical C( p, ?) N S(E) factors and reaction rates via the C(Li, He) N reaction. Li, Y.; Li, Z.; Li, E.; Bai, X.; Su, J.; Guo, B.; Wang, B.; Yan, S.; Zeng, S.; Liu, J.; Liu, X.; Jin, S.; Wang, Y.; Zhang, L.; Yu, X.; Li, L.; Lian, G.; Fan, Q.; Liu, W. // European Physical Journal A -- Hadrons & Nuclei;Feb2012, Vol. 48 Issue 2, p1 

    The C(Li, He) N reactions were measured at E (Li) = 34 MeV with the Q3D magnetic spectrometer of the HI-13 tandem accelerator, and the first peaks of the angular distributions were obtained for the first time. The N proton spectroscopic factors were extracted to be 0.67�0.09 and...

  • Summary Report of Working Group 4: Plasma Wakefield Acceleration. Rosenzweig, J. B.; Seryi, A. // AIP Conference Proceedings;11/5/2010, Vol. 1299 Issue 1, p98 

    This report gives a guide to the discussions of Working Group 4 of the 2010 Advanced Accelerator Concepts Workshop, which was devoted to theory, simulation and experimental issues associated with plasma wakefield acceleration (PWFA). Sessions were organized thematically in this group,...

  • Pulse shaping by relativistic transparency in overdense plasma and its applications in particle acceleration. Hur, Min Sup; Kulagin, Victor V.; Nam, Inhyuk; Suk, Hyyong // AIP Conference Proceedings;Dec2012, Vol. 1507 Issue 1, p797 

    A versatile shaping of a laser pulse using relativistic transparency in an overdense plasma has been studied. First we present the propagation of a linearly polarized pulse through an overdense plasma and a semi-phenomenological 1-dimensional formula to calculate the channel-digging speed....

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