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Energy Loss of 〈110〉 Channelled α‐Recoil Atoms in Gold
Author(s) -
Ibel K.,
Sizmann R.
Publication year - 1968
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19680290141
Subject(s) - recoil , atomic physics , physics , energy (signal processing) , string (physics) , transverse plane , nuclear physics , structural engineering , quantum mechanics , engineering
Using time‐of‐flight technique, the differential energy loss of channelled Pb‐208 (169 keV), Pb‐210 (146 keV), and Tl‐208 (116 keV) recoil atoms along the 110 direction in gold is investigated. The results are − d E /d z = (34.7 ± 3.5), (35.1 ± 3.1), and (36.8 ± 8.3) eV/Å at transverse energies of the aligned motion to the string direction of 140, 120, and 105 eV, respectively. Theoretical considerations based on Lindhard's string treatment and Firsov's impact parameter dependent electronic energy transfer relation strongly suggest that the measured stopping powers of the aligned motion are predominantly electronic; in random motion nuclear energy loss is preponderating.