Thermionic emission characteristics of graphite and its applications

Author: Xiao Yingkai
Publisher:
Publish Date: 2003-06-01
Features: This book systematically discusses the non-reductive thermal ion emission characteristics of graphite and the methods established based on these characteristics for high-precision mass spectrometric determination of isotopes of boron, chlorine, bromine, oxygen, and nitrogen. It also introduces the applications and progress of these isotopes in isotope chemistry and geochemistry research. The book is divided into eight chapters. Chapter 1 briefly introduces the basic properties of graphite, including its physicochemical properties, crystal structure, and types; Chapter 2 briefly describes the fundamental theory of thermal ionization, mainly including thermal ionization ion sources, positive thermal ionization, negative thermal ionization, and sample coating techniques; Chapter 3 introduces the basic theory of non-reductive thermal ion emission of graphite, sample coating techniques, and their applications in isotopic determination of several elements; Chapters 4 to 8 are the key focus of the book, systematically elaborating on and discussing the non-reductive thermal ion emission characteristics of graphite, the determination of isotopic compositions of boron, chlorine, bromine, and nitrogen in nitrates, as well as their applications and progress in isotope chemistry and geochemistry research. This book can serve as a reference for researchers and personnel in scientific research institutions and universities engaged in isotope mass spectrometric determination methods and isotope chemistry and isotope geochemistry research. It can also be used as a teaching reference material in higher education institutions.