Patent ID: 9188570
Filing Date: 2015-11-17
Classification: G01N,H01J

Abstract:
1. A detector body comprising: an enclosed elongate main chamber, said enclosed elongate main chamber having a main chamber first end and a main chamber second end; a first ionization source, said first ionization source positioned in said enclosed elongate main chamber adjacent said main chamber first end, a column gas inlet piping into said enclosed elongate main chamber between said first ionization source and said main chamber second end; a second ionization source, said second ionization source positioned in said enclosed elongate main chamber adjacent said main chamber second end, an outlet piping from said enclosed elongate main chamber positioned between said column gas inlet piping and said second ionization source; a first collecting electrode having a first collecting electrode end exposed to said enclosed elongate main chamber between said column gas inlet piping and said outlet piping; a first bias electrode having a first bias electrode end exposed to said enclosed elongate main chamber between said column gas inlet piping and said outlet piping; a second collecting electrode having a second collecting electrode end exposed to said enclosed elongate main chamber between said first collecting electrode end and said second ionization source; a second bias electrode having a second bias electrode end exposed to said enclosed elongate main chamber between said first collecting electrode end and said second ionization source; and an elongate second chamber, said elongate second chamber having a second chamber first end and a second chamber second end, said elongate second chamber in communication at said second chamber second end with said enclosed elongate main chamber between said first collecting electrode and said second collecting electrode; a third ionization source, said third ionization source positioned in said elongate second chamber adjacent said second chamber first end; a third collecting electrode having a third collecting electrode end exposed to said elongate second chamber between said third ionization source and said second chamber second end; and a third combined bias electrode having a third bias electrode end exposed to said elongate second chamber between said said third ionization source and said second chamber second end.