A STUDY OF ELECTRON-ATTACHMENT TO C-70 USING THE FALP TECHNIQUE

The absolute reaction rate coefficients for electron attachment to C-70 have been measured in the electron temperature, T-c, range from 300 to 4500 K using the flowing-afterglow/Langmuir probe technique. A detailed comparison of the electron attaching properties of C-70 with C-60 is made. Thus, whilst electron capture to C-60 occurs only in the p-wave channel at these T-c, it is tentatively reasoned that electron capture by C-70 proceeds preferentially in the s-wave channel below a T-c of about 1000 K and in the p-wave channel and/or the s-wave channel at the higher T-c.