2023 Fiscal Year Final Research Report
Imaging of interaction frontier orbitals by electron momentum spectroscopy of atomic and molecular clusters
| Project/Area Number |
20H02688
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Review Section |
Basic Section 32010:Fundamental physical chemistry-related
|
|---|
| Research Institution | Tokyo Institute of Technology |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2020-04-01 – 2024-03-31
|
| Keywords | 分子軌道 / 波動関数 / クラスター / 電子分光 / 物理化学 |
|---|
| Outline of Final Research Achievements |
In this study, aiming at experimentally investigating the origin of intermolecular interaction in terms of electronic structure, we have broadened the applicability of electron momentum spectroscopy (EMS) that enables us to study electron momentum distribution of individual molecular orbitals by using electron Compton scattering. As a result, we have developed a highly-sensitive apparatus whose correction efficiency is estimated to be two orders of magnitude higher than that of the existing apparatus of same size. In addition, it has become possible to improve the experimental resolution of electron binding energy by a factor of two. Furthermore, the apparatus has been successfully applied to EMS studies of core orbitals. In parallel, theoretical analysis to extract information on reaction intermediates from time-resolved EMS data has been developed. These achievements form the basis for making interaction-orbital imaging of atomic and molecular clusters feasible.
|
| Free Research Field |
物理化学
|
| Academic Significance and Societal Importance of the Research Achievements |
分子間相互作用は物質のほぼすべての性質に深く関わっており、その起源を電子レベルで解明するための多くの努力がこれまで払われてきている。本研究の意義は、原子・分子が数個集合したクラスターの分子間結合について、これまでもっぱら研究されてきているエネルギー的側面ではなく、軌道形状（電子分布）に焦点をあて、従来とは異なる視点から分子間相互作用の基礎的理解を得ようとすることにある。本研究により、クラスターの分子軌道イメージングに不可欠な実験的基礎を確立し、今後、本手法を実際の系に応用することにより分子間相互作用の起源に迫ることができると期待される。
|
