Theoretical study of an isotope separation method with terahertz optical pulses

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420875
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nuclear engineering
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: ICHIHARA AKIRA 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力基礎工学研究センター, 研究主幹 (60354784)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 同位体分離 / テラヘルツ / 二原子分子 / 回転励起 / 分子解離 / 数理モデル / 量子ウォーク / 直交多項式

Outline of Final Research Achievements

We proposed a method for dissociating diatomic molecules isotope-selectively in the gas phase by using terahertz optical pulses. A pulse train composed of a few pulses was introduced to excite the selected isotope into the highly rotationally-excited state. With the computer simulation for lithium chloride molecules in the rotational temperature of 70 K, we demonstrated that the selected isotope molecules can be dissociated effectively by using the designed terahertz pulses. Moreover, we clarified the characteristics of rotational excitation induced by optical pulse trains through the analyses of mathematical models.

Free Research Field

原子力学