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Secondary electron emission from thin foils under fast-ion bombardment

Journal Article · · Phys. Rev. B: Condens. Matter; (United States)
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The total secondary electron emission (SEE) coefficient ..gamma.. was measured from sputter-cleaned self-supporting C, Al, Ni, Cu, Pd, Ag, Sm, Gd, Au, and Bi targets under bombardment of fast protons, as well of incident H/sup +/, Li/sup 2+/, Li/sup 3+/, C/sup 3+/, C/sup 4+/, O/sup 3+/, O/sup 4+/, and O/sup 5+/ ions from thin carbon foils (20 ..mu..g/cm/sup 2/) in the energy range 0.4less than or equal toE/sub p/less than or equal to22 MeV. The material paramter ..lambda.. deduced from our measurements is calculated to 0.031 +- 0.005 nm/eV for the different studied targets with 28less than or equal toZless than or equal to83. For all projectiles and velocity regions studied the SEE coefficient ..gamma.. and the stopping power have the same velocity dependence. However, for a given projectile velocity, the ..gamma.. coefficient and the stopping power do not have the same projectile Z/sub p/ dependence. The data are discussed in the frame of an extended Sternglass model.

Research Organization:
Department of Electrical Engineering, University of Thessaloniki, GR-54006 Thessaloniki, Greece
OSTI ID:
6441735
Journal Information:
Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 39:10; ISSN PRBMD
Country of Publication:
United States
Language:
English

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Related Subjects

656003* -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOMIC NUMBER
CHARGED PARTICLES
COLLISIONS
ELEMENTS
EMISSION
ENERGY RANGE
FOILS
ION COLLISIONS
IONS
KEV RANGE
KEV RANGE 100-1000
METALS
MEV RANGE
MEV RANGE 01-10
MEV RANGE 10-100
MULTICHARGED IONS
PARAMETRIC ANALYSIS
SECONDARY EMISSION
STOPPING POWER
VELOCITY