Patent · US Expired

Method for producing selected mass spectra

US4209697A · kind A · utility

8Cited by

1References

5Claims

0Family size

Assignee

Gesellschaft fur Strahlen- und Umweltforschung mbH (GSF)

Inventors

Gerhard Renner · Deggendorf, DE
Eberhard Unsold · Bocholt, DE

Key dates

Filing date	Jan 26, 1978
Grant date	Jun 24, 1980
Priority date	—
Expiry date	Jan 26, 1998

Classification

Technology area (CPC H)Electricity
CPC primaryH01J49/161
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

In a method for producing selected mass spectra by directing electromagnetic radiation through an optical system onto sample material for vaporization, destruction, excitation and/ or ionization in the microrange, setting the expanse of the irradiation region of the sample by selection of the energy density of the radiation, and detecting the released particles, the radiation power density is varied for producing mass spectra having respectively different proportions of atom and molecule spectra.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.