Laser isotope separation of ²²³Ra

Area of Science:

• Atomic Physics
• Laser Spectroscopy
• Nuclear Chemistry

Background:

• Radium isotopes have significant applications in nuclear medicine.
• Efficient and pure production of specific radium isotopes is challenging.
• Laser isotope separation (LIS) offers a promising route for targeted isotope production.

Purpose of the Study:

• To theoretically investigate a three-step photoionization scheme for the laser isotope separation of Radium-223 (²²³Ra).
• To optimize system parameters for efficient and high-purity ²²³Ra production.
• To assess the impact of various physical factors on the LIS process.

Main Methods:

• Theoretical modeling of a three-step photoionization process for ²²³Ra.
• Analysis of factors including laser bandwidth, power density, Doppler broadening, atomic density, and charge exchange collisions.
• Derivation of optimal system parameters for isotope separation.

Main Results:

• The study identified optimal parameters for ²²³Ra laser isotope separation.
• It was theoretically demonstrated that 98.5% radio-isotopic purity of ²²³Ra can be achieved.
• A production rate of 0.74 μg/h, equivalent to 435 patient doses per hour, is feasible.

Conclusions:

• The proposed photoionization scheme is effective for ²²³Ra laser isotope separation.
• This research provides a foundational theoretical framework for radium isotope separation.
• The findings pave the way for enhanced production of ²²³Ra for medical use.