Library

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
Filter
  • 1990-1994  (6)
Source
Material
Years
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Monte Carlo simulations of secondary electron emission from CsI, induced by 1–10 keV x rays and electrons (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 72 (1992), S. 5429-5436 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A model for electron transport and emission in CsI is proposed. It is based on theoretically calculated microscopic cross sections for electron interaction with the nuclear and the electronic components of the solid. A Monte Carlo program based on this model was developed to simulate secondary electron emission induced by x rays and electrons in the energy range of 1 to 10 keV. The calculated secondary emission yields agree with existing experimental data. The model provides all necessary characteristics for the design of radiation detectors based on secondary electron emission. It can be expanded to higher incident energies and other alkali halides.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.351984
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Low-energy electron transport in alkali halides (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 76 (1994), S. 4656-4662 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A model of electron transport in alkali halides, below 10 eV, is described. It is based on theoretically calculated microscopic cross sections of electron interactions with lattice phonons. Both acoustic and optical scatterings are taken into account, the former being also treated as a quasielastic process that randomizes the electron motion. Monte Carlo calculations based on the model simulate the UV-induced photoelectron emission from CsI. The calculated quantum efficiency and energy spectra are in good agreement with experimental data, in the photon energy range of 6.3–8.6 eV. The probability for an electron to escape from CsI, NaCl, and KCl is provided as a function of its energy and creation depth. A comparison is made between our approach and other phenomenological models.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.357303
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Specific primary ionization induced by minimum ionizing electrons in CH4, C2H6, C3H8, i-C4H10, argon, dimethylether, triethylamine, and tetrakis(dimethylamino)ethylene (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 74 (1993), S. 3645-3651 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Specific primary ionization induced by minimum ionizing electrons has been measured in several gases and vapors. Charges deposited by β-electrons in a low-pressure gas were collected, amplified by a multistep gaseous electron multiplier, and counted. The high counting efficiency of the multiplier provided results of systematically higher values as compared to existing data. The respective values of the specific primary ionization in CH4, C2H6, C3H8, i-C4H10, argon, dimethylether, triethylamine, and tetrakis(dimethylamino)ethylene are: 0.034, 0.065, 0.095, 0.12, 0.03, 0.082, 0.195, and 0.370 clusters/cm Torr. The experimental method is presented and the results and their accuracy are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.354505
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Characteristics of secondary electron emission from CsI induced by x rays with energies up to 100 keV (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 74 (1993), S. 7506-7509 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A microscopic model for low energy electron interaction in alkali halides was used to simulate secondary electron emission from CsI induced by x rays with energies up to 100 keV. The integral "current'' and "pulse'' yields were calculated as function of the x-ray energy, CsI convertor thickness, and angle of incidence. We observe a decrease in true low energy (〈50 eV) secondary electron yields at increasing x-ray energies and discuss the effectiveness of CsI convertors coupled to gaseous electron multipliers developed for fast, high resolution x-ray imaging.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.354975
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Spatial characteristics of electron- and photon-induced secondary electron cascades in CsI (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 76 (1994), S. 1676-1680 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Our microscopic model for electron transport in alkali halides was used for the calculation of the spatial characteristics of secondary electron cascades induced by x rays and electrons in an infinite CsI volume, in the energy range of 5–50 keV. The results show that the shape of the cascade cloud preserves the features of the primary interactions only at the core, where the cascade has an elongated, forward peaked shape for incident electrons and is spherically symmetric for photons. At the periphery the cloud is practically spherical, and of very low electron density. The maximal cascade dimensions do not exceed 10 μm at the highest considered energy. The impact of these characteristics on secondary electron emission from finite thickness CsI layers is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.357708
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Search for supermassive nuclei in nature (1991)
    Springer
    The European physical journal 338 (1991), S. 357-361 
    Details
    ISSN: 1434-601X
    Keywords: 14.80.Pb ; 25.70-z ; 29.40Jz
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report on a search for supermassive nuclei in nature with masses up to 107 amu. Such exotic nuclei might consist, for example, of stable strange matter, which comprises a mixture of up, down, and strange quarks, or of relic particles from the early Universe. The experiments are based on Rutherford backscattering of heavy ions, preferably238U, from various target samples. The measured parameters of a detected particle are its time-of-flight, scattering angle, and specific ionization. From this information the mass of the target nucleus can be inferred. Upper limits for the abundance of strange supermassive nuclei with massesA−4·102 to 107 amu relative to the number of nucleons were found to be in the range 10−11 to 10−15. For the narrower mass rangeA −103 to 104 amu the limit is 2· 10−17.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01288200
    Library Location Call Number Volume/Issue/Year 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...