𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Formation of C60− and C70− by free electron capture. Activation energy and effect of the internal energy on lifetime

✍ Scribed by Thomas Jaffke; Eugen Illenberger; Mathias Lezius; Stefan Matejcik; David Smith; Tilmann D. Märk

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
528 KB
Volume
226
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

✦ Synopsis

Electron attachment to C6,, and CT0 yields long-lived (i.e. mass spectrometrically observable) anions C, and C% within a remarkably broad energy region (up to 13-14 eV) as already established in a previous experiment. Inspection of the low energy region reveals, however, that electron capture is characterized by an activation barrier of 240 meV for C& close to the results of the previous FALP study and 200 meV for C 70. Flight time measurements of the anions indicate that the lifetimes of C& and C, decrease exponentially with increasing internal energy in the range 8 d E* =$12 eV. For example, at 10 eV the lifetime is 90 ps for C, and 300 ps for CT,. It is also established that the lifetime of both anions is controlled by electron emission (detachment).

📜 SIMILAR VOLUMES

Ab initio MO calculations on the electro
Ab initio MO calculations on the electronic and geometric structure of fullerene dications, C2+60, and the double-ionization energy of C60
✍ Jan Hrušák; Helmut Schwarz 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 365 KB

Ab initio SCF calculations have been performed to determine the equilibrium geometry of the doubly charged firllerene, Cg . A significant Jahn-Teller distortion is found to be operative. The adiabatic double-ionization energy for the process C&I,) +Cg (DM) is calculated to be IE,,= 18.9 eV, this nu

On the influence of electron energy on i
On the influence of electron energy on iodine-doped polyaniline formation by plasma polymerization
✍ M. G. Olayo; J. Morales; G. J. Cruz; R. Olayo; E. Ordoñez; S. R. Barocio 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 202 KB 👁 1 views

The influences that both electron energy and density of a plasma bear on thin film formation are examined in the case of iodine-doped polyaniline polymerization. The plasma was produced by means of 13.5-MHz radiofrequency-generated glow discharges in low-pressure (ca. 10 Ϫ2 mbar) air between electro

Excitation energy dependence of the quan
Excitation energy dependence of the quantum yields of fluorescence and electron formation from aqueous phenol by means of the heavy atom effect
✍ J. Zechner; G. Köhler; G. Grabner; N. Getoff 📂 Article 📅 1976 🏛 Elsevier Science 🌐 English ⚖ 387 KB

The formation of hydrated electrons and H atoms from phenol in neutral aqueous solutions has been studied by cxcitation in its first and second excited singlet state. The quantum yields of both H and c;q show a strong increase at higher cxcitation energies. However, this increase cannot fully eccoun