SPUTTER INITIATED RESONANCE IONIZATION SPECTROSCOPY FOR IN SITU MICROANALYSIS IN THE GEOSCIENCES

Award Information
Agency:
National Science Foundation
Branch
n/a
Amount:
$49,680.00
Award Year:
1989
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
10661
Agency Tracking Number:
10661
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
144 Ridgeway Ctr, Oak Ridge, TN, 37830
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Robert D Willis
Principal Investigator
(615) 483-1113
Business Contact:
() -
Research Institute:
n/a
Abstract
SPUTTER INITIATED RESONANCE IONIZATION SPECTROSCOPY (SIRIS),BASED ON THE CONCEPT OF RESONANCE IONIZATION OF SPUTTERED ATOMS, OFFERS THE POTENTIAL TO MAKE IN SITU CHEMICAL AND ISOTOPIC MICROANALYSES WITH EXCELLENT SENSITIVITY, MINIMAL FRACTIONATION AND MATRIX EFFECTS, AND FREEDOM FROM ISOBARIC INTERFERENCES-FACTORS WHICH FREQUENTLY LIMIT ION MICROPROBE ANALYSES IN GEOLOGICAL APPLICATIONS. MEASUREMENTS OF (1) CAAND TI ISOTOPE ANOMALIES IN HIBONITE, AND (2) EXCESS (40)CA IN POTASSIUM FELDSPAR ARE INTERESTING SCIENTIFIC PROBLEMS WHICH CHALLENGE THE PRESENT CAPABILITIES OF THE ION MICROPROBE. THE RESEARCHERS PROPOSE TO DEMONSTRATE THE POTENTIAL APPLICABILITY OF THE SIRIS TECHNIQUE FOR GEOLOGICAL STUDIES BY MEASURING THE CA AND TI ISOTOPE RATIOS IN THESE TWO MINERALS. PRELIMINARY RESEARCH WILL BE REQUIRED IN ORDER TO (1) ASSESS INTERFERENCE PROBLEMS DUE TO UNSUPPRESSED SECONDARY IONS AND NONRESONANT PHOTO-IONS AND EVALUATE METHODS FOR THEIR ELIMINATION; AND (2) EXPERIMENTALLY IDENTIFY AND EVALUATE RESONANT IONIZATION SCHEMES TO CA AND TI. RESULTS FROM THE PROPOSED RESEARCH WILL PROVIDE THE BASIS FOR THE DEVELOPMENT OF NEW ANALYTICAL METHODS WHICH WOULD SIGNIFICANTLY ADVANCE ANALYTICAL CAPABILITES IN THE EARTH SCIENCES AND PROMOTE NEW AREAS OF RESEARCH. THESE BENEFITS COULD EXTEND TO OTHER AREAS SUCH AS THE SEMICONDUCTOR INDUSTRY, THE BIOMEDICAL FIELD, AND ENVIRONMENTAL SCIENCES.

* information listed above is at the time of submission.

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