ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Laser zone-melted Bi-Sr-Ca-Cu-O thick films (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 55 (1989), S. 1683-1685 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Directionally solidified superconducting Bi-Sr-Ca-Cu-O thick films have been fabricated by laser zone melting. Highly aligned grain structures were obtained. Films with no post-processing anneal showed Tc(R=0)=82 K and transport critical current densities Jc as high as 450 A/cm2 at 77 K and 5400 A/cm2 at 60 K. After annealing for 65 h at 850 °C, Tc increased to 85 K, and the best sample showed Jc =2200 A/cm2 at 77 K and 11 200 A/cm2 at 60 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.102315
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Transport of self-field dominated dc low-energy electron beams through low-pressure gases (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 62 (1987), S. 1639-1654 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A high-intensity dc electron beam with energy on the order of 100 keV propagating through a rarefied gas may be space-charge neutralized and made self-focusing by means of the beam-generated plasma. The purpose of this research was to investigate the propagation of partially and fully neutralized electron beams and to identify the ranges of gas pressure and other parameters which would permit high-quality electron beam transport, with linear self-focusing forces. Experiments were performed to measure transverse current density distributions for an electron beam of energy 60 keV, current 270 mA, propagating through nitrogen at pressures from 10−6 to 10−5 Torr. Theories were developed to describe the radial distributions of neutralization in the two distinct cases of incomplete and complete neutralization. The neutralization distributions in each case were calculated numerically and using a beam sheath tracing program, theoretical values of the beam current density distributions were obtained. Good agreement was generally found between experimental data and the calculations. The results confirm that under conditions where complete and uniform neutralization was expected, the beam optics were, in fact, linear, while partial neutralization produced serious nonlinearities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.339588
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    200-MeV LINAC—injector of storage ring for HESYRL : International conference on synchrotron radiation instrumentation (SRI−88) (1989)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 60 (1989), S. 1701-1704 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The 200-MeV electron linac at the Hefei National Synchrotron Radiation Laboratory (HESYRL) is described. It is not only an injector of the 800-MeV storage ring, but an electron accelerator used for nuclear physics experiments and some other applications as well. The main design parameters and measuring results of the LINAC are given. The linac is a travelling wave structure, operating at a frequency of 2856 MHz, constant impedance, in a 2/3π mode. Its total length is about 35 m. Five klystrons are used as rf power; each klystron will provide 15 MW. In November 1987, the machine was successfully commissioned and typical operating parameters are 220 MeV, and 50 mA with an energy spread of ±0.8%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1140932
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...