Author/Authors :
Lee، نويسنده , , G.H. and Huh، نويسنده , , S.H and Park، نويسنده , , Y.C. and Hayakawa، نويسنده , , F. and Negishi، نويسنده , , Y. and Nakajima، نويسنده , , A. O. Ayhan · A. C. Kaya · H. F. Nied، نويسنده , , K.، نويسنده ,
Abstract :
We have recorded photoelectron spectra of Wn− (n=20–90) using a magnetic bottle type photoelectron spectrometer. Each photoelectron spectrum consists of a single, broad peak, shifted successively towards a higher electron binding energy (EBE) with increasing n. We estimated the threshold EBEs from the spectra. The threshold EBE versus n−1/3 plot showed a straight line and was extrapolated to 4.50 eV which is consistent with the W bulk work function, 4.55 eV. We also estimated the bond dissociation energies of Wn− cluster anions using a simple energetic model.
