ZEKE-PEPICO investigations of dissociation energies in ionic reactions

✍ Scribed by Karl-Michael Weitzel; Joachim Mähnert; Martin Penno

• Book ID: 103036367
• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 996 KB
• Volume: 224
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(94)00567-2

✦ Synopsis

A coincidence experiment between zero kinetic energy photoelectrons (ZEKE-PE) and the corresponding photoions (PI) has been set up. In this experiment electrons and ions are extracted from an ion source in a delayed pulsed field. The high electron energy resolution is based on time of Right discrimination of the electrons. This ZEKE-PEPICO technique has been applied to the threshold of the reactions: (i) CaH$ +C,H+ +H and (ii) Hz +H+ + H. The example of H loss from acetylene ions iBustrams the power of the technique, while the dissociative ionization of Hz represents a critical test for the ZEKE-PEPICO spectrometer.