CHARACTERISTIC ELECTRON ENERGY LOSS SPECTRA OF SOME ALKALI METALS AND ALKALINE EARTHS
The characteristic electron energy loss spectra of Na, K, Ca, and Ba were obtained using the reflection technique and primary electron energies of 800 and 1500 ev. All energy losses observed in these metals can be explained as arising from excitation of plasma-type oscillations, electronic transitions involving excited states, and ionization. Plasma excitation energies of 5.87 and 3.87 ev were observed in Na and K, respectively. The first plasma loss peak in the spectra of these metals was displaced from its expected position. Loss peaks in K, Ca, and Ba that are considered to be associated with excited states were related to a series of peaks in Ti, V, and Cr, and a peak in Zr. The specific form of the excited state involved cannot be determined from this data alone, but evidence is presented suggesting that an intense broad peak of this nature will occur in the spectra of all the elements immediately preceding or at the beginning of each series of transition metals. (auth)
- Research Organization:
- Univ. of Western Australia, Nedlands
- NSA Number:
- NSA-16-012273
- OSTI ID:
- 4788936
- Journal Information:
- Proc. Phys. Soc. (London), Journal Name: Proc. Phys. Soc. (London) Vol. Vol: 79
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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