Atomic and molecular threshold photoelectron spectroscopy

Química Nova

Silva, Helen¹  Universidade Federal de Juiz de Fora, Juiz de Fora¹  Lopes, Maria Cristina Andreolli¹  Moreira, Cleber Dias¹  Couto, Helder¹ 

关键词: threshold photoelectron spectroscopy;    synchrotron radiation;    photoionization.;   

DOI  :  10.1590/S0100-40422006000100028

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

A threshold photoelectron spectrometer applied to the study of atomic and molecular threshold photoionization processes is described. The spectrometer has been used in conjunction with a toroidal grating monochromator at the National Synchrotron Radiation Laboratory (LNLS), Brazil. It can be tuned to accept threshold electrons (< 20 meV) and work with a power resolution of 716 (~18 meV at 12 eV) with a high signal/noise ratio. The performance of this apparatus and some characteristics of the TGM (Toroidal Grating Monochromator) beam line of LNLS are described and discussed by means of argon, O2 and N2 threshold photoelectron spectra.

【 授权许可】

Unknown