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Title: High resolution resonance ionization imaging detector and method

Abstract

A resonance ionization imaging device (RIID) and method for imaging objects using the RIID are provided, the RIID system including a RIID cell containing an ionizable vapor including monoisotopic atoms or molecules, the cell being positioned to intercept scattered radiation of a resonance wavelength .lambda..sub.1 from the object which is to be detected or imaged, a laser source disposed to illuminate the RIID cell with laser radiation having a wavelength .lambda..sub.2 or wavelengths .lambda..sub.2, .lambda..sub.3 selected to ionize atoms in the cell that are in an excited state by virtue of having absorbed the scattered resonance laser radiation, and a luminescent screen at the back surface of the RIID cell which presents an image of the number and position of charged particles present in the RIID cell as a result of the ionization of the excited state atoms. The method of the invention further includes the step of initially illuminating the object to be detected or imaged with a laser having a wavelength selected such that the object will scatter laser radiation having the resonance wavelength .lambda..sub.1.

Inventors:
 [1];  [1];  [1]
  1. Gainesville, FL
Issue Date:
Research Org.:
Univ. of Florida, Gainesville, FL (United States)
OSTI Identifier:
872788
Patent Number(s):
6008496
Assignee:
University of Florida (Gainesville, FL)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
DOE Contract Number:  
FG05-88ER13881
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
resolution; resonance; ionization; imaging; detector; method; device; riid; provided; including; cell; containing; ionizable; vapor; monoisotopic; atoms; molecules; positioned; intercept; scattered; radiation; wavelength; lambda; detected; imaged; laser; source; disposed; illuminate; wavelengths; selected; ionize; excited; virtue; absorbed; luminescent; screen; surface; image; position; charged; particles; result; step; initially; illuminating; scatter; resonance ionization; imaging device; charged particles; charged particle; laser radiation; laser source; cell containing; scattered radiation; imaging detector; resonance wavelength; cell contain; ionization imaging; /250/

Citation Formats

Winefordner, James D, Matveev, Oleg I, and Smith, Benjamin W. High resolution resonance ionization imaging detector and method. United States: N. p., 1999. Web.
Winefordner, James D, Matveev, Oleg I, & Smith, Benjamin W. High resolution resonance ionization imaging detector and method. United States.
Winefordner, James D, Matveev, Oleg I, and Smith, Benjamin W. Fri . "High resolution resonance ionization imaging detector and method". United States. https://www.osti.gov/servlets/purl/872788.
@article{osti_872788,
title = {High resolution resonance ionization imaging detector and method},
author = {Winefordner, James D and Matveev, Oleg I and Smith, Benjamin W},
abstractNote = {A resonance ionization imaging device (RIID) and method for imaging objects using the RIID are provided, the RIID system including a RIID cell containing an ionizable vapor including monoisotopic atoms or molecules, the cell being positioned to intercept scattered radiation of a resonance wavelength .lambda..sub.1 from the object which is to be detected or imaged, a laser source disposed to illuminate the RIID cell with laser radiation having a wavelength .lambda..sub.2 or wavelengths .lambda..sub.2, .lambda..sub.3 selected to ionize atoms in the cell that are in an excited state by virtue of having absorbed the scattered resonance laser radiation, and a luminescent screen at the back surface of the RIID cell which presents an image of the number and position of charged particles present in the RIID cell as a result of the ionization of the excited state atoms. The method of the invention further includes the step of initially illuminating the object to be detected or imaged with a laser having a wavelength selected such that the object will scatter laser radiation having the resonance wavelength .lambda..sub.1.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

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