| Project/Area Number |
19H00669
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (A)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Review Section |
Medium-sized Section 14:Plasma science and related fields
|
|---|
| Research Institution | National Institutes for Quantum Science and Technology |
|---|
Principal Investigator |
PIROZHKOV Alexander 国立研究開発法人量子科学技術研究開発機構, 関西光量子科学研究所 光量子ビーム科学研究部, 上席研究員 (00446410)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
Esirkepov Timur 国立研究開発法人量子科学技術研究開発機構, 関西光量子科学研究所 光量子ビーム科学研究部, 上席研究員 (10370363)
匂坂 明人 国立研究開発法人量子科学技術研究開発機構, 関西光量子科学研究所 光量子ビーム科学研究部, 主幹研究員 (20354970)
小倉 浩一 国立研究開発法人量子科学技術研究開発機構, 関西光量子科学研究所 光量子ビーム科学研究部, 専門業務員 (30354971)
Pikuz Tatiana 大阪大学, 先導的学際研究機構, 特任准教授(常勤) (20619978)
難波 愼一 広島大学, 先進理工系科学研究科(工), 教授 (00343294)
桐山 博光 国立研究開発法人量子科学技術研究開発機構, 関西光量子科学研究所 光量子ビーム科学研究部, グループリーダー (40354972)
Koga James 国立研究開発法人量子科学技術研究開発機構, 関西光量子科学研究所 光量子ビーム科学研究部, 専門業務員 (70370393)
神門 正城 国立研究開発法人量子科学技術研究開発機構, 関西光量子科学研究所, 副所長 (50343942)
|
|---|
| Project Period (FY) |
2019-04-01 – 2024-03-31
|
| Project Status |
Completed (Fiscal Year 2023)
|
| Budget Amount *help |
¥45,890,000 (Direct Cost: ¥35,300,000、Indirect Cost: ¥10,590,000)
Fiscal Year 2023: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2022: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2021: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
Fiscal Year 2020: ¥10,400,000 (Direct Cost: ¥8,000,000、Indirect Cost: ¥2,400,000)
Fiscal Year 2019: ¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000)
|
|---|
| Keywords | Coherent x-ray source / New imaging paradigm / BISER / Laser plasma / Relativistic plasma / Plasma singularities / Relativistic singularity |
|---|
| Outline of Research at the Start |
We will develop a bright coherent broadband keV x-ray source based on Burst Intensification by Singularity Emitting Radiation (BISER), suitable for imaging quantum dynamics at nano- & atomic levels, unlike present alternatives: keV XFEL pulses are long (fs), while keV atomic harmonics are weak. Our x-ray source will enable a revolutionary Attosecond Lensless Imaging of essentially quantum samples: single macromolecules, superconducting nanostructures, etc. Eventually it may elucidate a still debatable quantum nature of life at biomolecule level [Al-Khalili, McFadden "Life on the Edge"(2014)].
|
| Outline of Final Research Achievements |
We demonstrated orders-of-magnitude x-ray yield enhancement of a new ultrabright coherent x-ray source based on the new principle, Burst Intensification by Singularity Emitting Radiation (BISER). The source is driven by high-power femtosecond laser and, unlike km-size accelerator-driven sources, is compact, with under a meter-size activated area. We demonstrated pulses with 10 μJ energy and 10^12 photons in the 60-100 eV photon energy range, and total bandwidth exceeding 1 keV, which corresponds to <10 attosecond (10^-17 second) bandwidth limit. We characterized BISER x-rays with high-resolution spectrographs and demonstrated high signal-to-noise Auger- and photoelectron spectra from single-shot BISER irradiation of Xe gas. Operating the BISER source at 0.1 Hz and 1 Hz repetition rates, we performed an x-ray imaging demonstration experiment where diffraction patterns revealed three periods of the sample (200 nm, 4 μm, and 150 μm).
|
| Academic Significance and Societal Importance of the Research Achievements |
X-rays have revolutionized science and society, with the present state-of-the-art kilometer-size sources. Our results will lead to revolutionary next-generation compact in-lab and in-fab x-ray imaging facilities far exceeding present capabilities and opening quantum imaging perspectives.
|
