Some Features of Boron Isotopes Separation by the Laser-Assisted Retardation of Condensation Method in Multipass Irradiation Cell Implemented as a Resonator

2022

Lobachevskii J Math

In this work, a method for solving the problem of efficient population transfer from the ground to some excited state by available technical means (varying resonator length) is proposed. We consider a mixture of similar quantum systems distributed in a stationary gas flow in the resonator with variable resonator length, which implements tailored laser field close to the optimal one. In difference from previous works, in this work piezoelectric transducer (PZT; or actuator) is used as mean of control to manipulate variable resonator length. The external actions are optimized to selectively prepare different stationary states of different species which are then separated using their diffusion with rates which differ due to different masses. This system provides an example of the general problem of optimizing states of distributed systems with stationary gas flow with diffusion.

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Section: Intracavity Laser Field Evolutionmentioning

confidence: 87%

Laser and Diffusion Driven Optimal Discrimination of Similar Quantum Systems in Resonator

2022

Lobachevskii J Math

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“…3, 4, and 5 . Average numbers of photons, resonantly absorbed by each isotopologue of BCl 3 molecule is given by (42 where excitation loss time coincides with the transition time of the gas flow across the laser beam ex = int , because all other relaxation times, caused by dimer formation, vibration-vibrational or vibration-translational transfers as well as spontaneous emission, are bigger [20].…”

Section: Laser Intensity Variation Range For the Applicability Of The Silarc Methodsmentioning

confidence: 99%

“…Proposed design is similar to the one from Ref. [20], unless whole gas flow is irradiated there and single-line excitation is applied. At the beginning of operation, the mixing tank is occupied only by the carrier gas (Ar) at room temperature T 0 , while target gas molecules ( BCl 3 ), having initially natural relative isotope abundance, are stored in the feed chamber.…”

Section: Boron Isotope Separation Setup Operational Principlesmentioning

confidence: 99%

“…Generalized result for spatial distribution of laser electric field amplification factor Q las , caused by multiple laser beam reflections inside the multi-pass cavity in the case of crosswise intersection with gas flow, obtained in Ref. [20], to the finite interval is given by…”

Section: Experimental Constraints On the Laser System Designmentioning

confidence: 99%

“…The research on carbon and boron isotope separation in a multi-pass cavity was performed also, for example, in Refs. [19,20].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

$${\text {CO}}_2$$ laser system design for efficient boron isotope separation by the method of selective laser-assisted retardation of condensation

2020

Appl. Phys. B

Self Cite

A cheap and efficient production of boron isotopes is important for providing further progress in nuclear engineering, semiconductor industry, and nuclear medicine. Motivated by this problem, we consider the CO 2 laser system designed to separate boron isotopes by the method of laser-assisted retardation of condensation. Values of the basic parameters for this system, such as an acceptable variation range of the laser operating pressure, mode locking laser system design, and estimation of an acceptable interval for the variation of laser intensity for various positions of the photo-absorption lines of BCl 3 , corresponding to ambiguity of available experimental data, are found. To calculate them, a new formalism, which takes into account spectral shape of photo-absorption cross section and laser pulse emission spectrum, is developed. Conclusion that the three-line excitation is the most efficient one has been derived.

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Objective Function in the Problem of Optimal Laser-Assisted Separation of Isotopes by the Method of Selective Retardation of Condensation

2020

J Math Sci