Development of novel method for the first ionization potential measurement toward for element 113

2016 Fiscal Year Final Research Report

• Project/Area Number: 26390119
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Quantum beam science
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: Sato Tetsuya K. 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 先端基礎研究センター, 研究副主幹 (40370382)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: アクチノイド / 第一イオン化エネルギー / ローレンシウム / オンライン同位体分離器 / 超重元素 / ニホニウム

Outline of Final Research Achievements

The first ionization potential (IP1) is one of the basic properties of atomic properties of elements and reflect to a binding energy of the valence orbital. So far, IP1 values after fermium, element 100, have not determined experimentally due to difficulties of experiments in superheavy element region.
In this work we have developed a novel method to determine the first ionization potential (IP1) by an application of a surface ionization which takes place a solid surface at high temperature. We successfully determined IP1 value of lawrencium (Lr, element 103) for the first time using the method and obtained an information on the electronic configuration of Lr atom.

Free Research Field

核・放射化学