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FR2333561A1 - Selective excitation of siotropes - particularly for enrichment of uranium isotopes with U235 - Google Patents

Selective excitation of siotropes - particularly for enrichment of uranium isotopes with U235

Info

Publication number
FR2333561A1
FR2333561A1 FR7513278A FR7513278A FR2333561A1 FR 2333561 A1 FR2333561 A1 FR 2333561A1 FR 7513278 A FR7513278 A FR 7513278A FR 7513278 A FR7513278 A FR 7513278A FR 2333561 A1 FR2333561 A1 FR 2333561A1
Authority
FR
France
Prior art keywords
change
type
particles
energy state
particle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7513278A
Other languages
French (fr)
Other versions
FR2333561B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jersey Nuclear Avco Isotopes Inc
Original Assignee
Jersey Nuclear Avco Isotopes Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US05/483,077 external-priority patent/US4156144A/en
Application filed by Jersey Nuclear Avco Isotopes Inc filed Critical Jersey Nuclear Avco Isotopes Inc
Publication of FR2333561A1 publication Critical patent/FR2333561A1/en
Application granted granted Critical
Publication of FR2333561B1 publication Critical patent/FR2333561B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/23—Arrangements of two or more lasers not provided for in groups H01S3/02 - H01S3/22, e.g. tandem arrangements of separate active media
    • H01S3/2383—Parallel arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D59/00—Separation of different isotopes of the same chemical element
    • B01D59/50—Separation involving two or more processes covered by different groups selected from groups B01D59/02, B01D59/10, B01D59/20, B01D59/22, B01D59/28, B01D59/34, B01D59/36, B01D59/38, B01D59/44
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
    • H01S3/1022—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
    • H01S3/1066—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using a magneto-optical device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
    • H01S3/107—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using electro-optic devices, e.g. exhibiting Pockels or Kerr effect
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
    • H01S3/22—Gases
    • H01S3/227—Metal vapour

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Lasers (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

System for changing the energy state of particles of one type of isotope in a medium containing several types of isotope, and more especially U235 in a mixture of U-isotopes, comprising (i) means for generating energetic radiation e.g. laser, in a sufficiently narrow band to be absorbed by the one type of particle without absorption by the other types (ii) means for causing the frequency of energetic radiation to change smoothly through a range of frequencies which contains an absorption line for the particular type of particle, so as to change its energy state selectively without altering that of the other particles of different type, such change of frequency of the energetic radiation being so defined that it produces the required change of energy state in the particular type of particle. In particular, the change in energy state is from a lower to a higher level, the variation of frequency operating so as to produce an adiabasic inversion in the energy states, which means are provided for photo-ionising the excited isotope particles and for separating them from the medium by magneto-hydrodynamic forces. Provides an improved technique for nuclear fuel enrichment particularly in the vapour phase. The system theoretically permits 100% ecitation of all the particles illuminated of the desired type. It can also be applied to laser amplifiers.
FR7513278A 1974-04-29 1975-04-28 Selective excitation of siotropes - particularly for enrichment of uranium isotopes with U235 Granted FR2333561A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US46526474A 1974-04-29 1974-04-29
US05/483,077 US4156144A (en) 1974-04-29 1974-06-25 Adiabatic inversion for selective excitation

Publications (2)

Publication Number Publication Date
FR2333561A1 true FR2333561A1 (en) 1977-07-01
FR2333561B1 FR2333561B1 (en) 1978-10-13

Family

ID=27041270

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7513278A Granted FR2333561A1 (en) 1974-04-29 1975-04-28 Selective excitation of siotropes - particularly for enrichment of uranium isotopes with U235

Country Status (8)

Country Link
AU (1) AU501659B2 (en)
CH (1) CH613630A5 (en)
DE (1) DE2518833A1 (en)
ES (1) ES437213A1 (en)
FR (1) FR2333561A1 (en)
IL (1) IL47100A (en)
NL (1) NL7505088A (en)
SE (1) SE7504955L (en)

Also Published As

Publication number Publication date
SE7504955L (en) 1975-10-30
FR2333561B1 (en) 1978-10-13
CH613630A5 (en) 1979-10-15
AU501659B2 (en) 1979-06-28
ES437213A1 (en) 1977-11-01
IL47100A (en) 1976-12-31
IL47100A0 (en) 1975-07-28
AU8063375A (en) 1976-11-04
DE2518833A1 (en) 1975-11-06
NL7505088A (en) 1975-10-31

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Legal Events

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ST Notification of lapse