A kiloelectron-volt ultrafast electron micro-diffraction apparatus using low emittance semiconductor photocathodes
We report the design and performance of a time-resolved electron diffraction apparatus capable of producing intense bunches with simultaneously single digit micrometer probe size, long coherence length, and 200 fs rms time resolution. We measure the 5d (peak) beam brightness at the sample location i...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC and ACA
2022-03-01
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| Series: | Structural Dynamics |
| Online Access: | http://dx.doi.org/10.1063/4.0000138 |
| _version_ | 1818554801952129024 |
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| author | W. H. Li C. J. R. Duncan M. B. Andorf A. C. Bartnik E. Bianco L. Cultrera A. Galdi M. Gordon M. Kaemingk C. A. Pennington L. F. Kourkoutis I. V. Bazarov J. M. Maxson |
| author_facet | W. H. Li C. J. R. Duncan M. B. Andorf A. C. Bartnik E. Bianco L. Cultrera A. Galdi M. Gordon M. Kaemingk C. A. Pennington L. F. Kourkoutis I. V. Bazarov J. M. Maxson |
| author_sort | W. H. Li |
| collection | DOAJ |
| description | We report the design and performance of a time-resolved electron diffraction apparatus capable of producing intense bunches with simultaneously single digit micrometer probe size, long coherence length, and 200 fs rms time resolution. We measure the 5d (peak) beam brightness at the sample location in micro-diffraction mode to be
7
×
10
13
A
/
m
2
rad
2. To generate high brightness electron bunches, the system employs high efficiency, low emittance semiconductor photocathodes driven with a wavelength near the photoemission threshold at a repetition rate up to 250 kHz. We characterize spatial, temporal, and reciprocal space resolution of the apparatus. We perform proof-of-principle measurements of ultrafast heating in single crystal Au samples and compare experimental results with simulations that account for the effects of multiple scattering. |
| first_indexed | 2024-12-12T09:44:52Z |
| format | Article |
| id | doaj.art-6ac30e80a69740f683ef3067f15bdcb4 |
| institution | Directory Open Access Journal |
| issn | 2329-7778 |
| language | English |
| last_indexed | 2024-12-12T09:44:52Z |
| publishDate | 2022-03-01 |
| publisher | AIP Publishing LLC and ACA |
| record_format | Article |
| series | Structural Dynamics |
| spelling | doaj.art-6ac30e80a69740f683ef3067f15bdcb42022-12-22T00:28:26ZengAIP Publishing LLC and ACAStructural Dynamics2329-77782022-03-0192024302024302-1110.1063/4.0000138A kiloelectron-volt ultrafast electron micro-diffraction apparatus using low emittance semiconductor photocathodesW. H. Li0C. J. R. Duncan1M. B. Andorf2A. C. Bartnik3E. Bianco4L. Cultrera5A. Galdi6M. Gordon7M. Kaemingk8C. A. Pennington9L. F. Kourkoutis10I. V. Bazarov11J. M. Maxson12 Cornell Laboratory for Accelerator-Based Sciences and Education, Cornell University, Ithaca, New York 14853, USA Cornell Laboratory for Accelerator-Based Sciences and Education, Cornell University, Ithaca, New York 14853, USA Cornell Laboratory for Accelerator-Based Sciences and Education, Cornell University, Ithaca, New York 14853, USA Cornell Laboratory for Accelerator-Based Sciences and Education, Cornell University, Ithaca, New York 14853, USA Kavli Institute at Cornell for Nanoscale Science, Ithaca, New York 14853, USA Cornell Laboratory for Accelerator-Based Sciences and Education, Cornell University, Ithaca, New York 14853, USA Cornell Laboratory for Accelerator-Based Sciences and Education, Cornell University, Ithaca, New York 14853, USA University of Chicago, Chicago, Illinois 60637, USA Cornell Laboratory for Accelerator-Based Sciences and Education, Cornell University, Ithaca, New York 14853, USA Cornell Laboratory for Accelerator-Based Sciences and Education, Cornell University, Ithaca, New York 14853, USA Kavli Institute at Cornell for Nanoscale Science, Ithaca, New York 14853, USA Cornell Laboratory for Accelerator-Based Sciences and Education, Cornell University, Ithaca, New York 14853, USA Cornell Laboratory for Accelerator-Based Sciences and Education, Cornell University, Ithaca, New York 14853, USAWe report the design and performance of a time-resolved electron diffraction apparatus capable of producing intense bunches with simultaneously single digit micrometer probe size, long coherence length, and 200 fs rms time resolution. We measure the 5d (peak) beam brightness at the sample location in micro-diffraction mode to be 7 × 10 13 A / m 2 rad 2. To generate high brightness electron bunches, the system employs high efficiency, low emittance semiconductor photocathodes driven with a wavelength near the photoemission threshold at a repetition rate up to 250 kHz. We characterize spatial, temporal, and reciprocal space resolution of the apparatus. We perform proof-of-principle measurements of ultrafast heating in single crystal Au samples and compare experimental results with simulations that account for the effects of multiple scattering.http://dx.doi.org/10.1063/4.0000138 |
| spellingShingle | W. H. Li C. J. R. Duncan M. B. Andorf A. C. Bartnik E. Bianco L. Cultrera A. Galdi M. Gordon M. Kaemingk C. A. Pennington L. F. Kourkoutis I. V. Bazarov J. M. Maxson A kiloelectron-volt ultrafast electron micro-diffraction apparatus using low emittance semiconductor photocathodes Structural Dynamics |
| title | A kiloelectron-volt ultrafast electron micro-diffraction apparatus using low emittance semiconductor photocathodes |
| title_full | A kiloelectron-volt ultrafast electron micro-diffraction apparatus using low emittance semiconductor photocathodes |
| title_fullStr | A kiloelectron-volt ultrafast electron micro-diffraction apparatus using low emittance semiconductor photocathodes |
| title_full_unstemmed | A kiloelectron-volt ultrafast electron micro-diffraction apparatus using low emittance semiconductor photocathodes |
| title_short | A kiloelectron-volt ultrafast electron micro-diffraction apparatus using low emittance semiconductor photocathodes |
| title_sort | kiloelectron volt ultrafast electron micro diffraction apparatus using low emittance semiconductor photocathodes |
| url | http://dx.doi.org/10.1063/4.0000138 |
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