Transition from Coherent to Stochastic electron heating in ultrashort relativistic laser interaction with structured targets
Abstract Relativistic laser interaction with micro- and nano-scale surface structures enhances energy transfer to solid targets and yields matter in extreme conditions. We report on the comparative study of laser-target interaction mechanisms with wire-structures of different size, revealing a trans...
| Main Authors: | , , , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2017-05-01
|
| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-017-01677-5 |
| _version_ | 1818683573472854016 |
|---|---|
| author | G. Cristoforetti P. Londrillo P. K. Singh F. Baffigi G. D’Arrigo Amit D. Lad R. G. Milazzo A. Adak M. Shaikh D. Sarkar G. Chatterjee J. Jha M. Krishnamurthy G. R. Kumar L. A. Gizzi |
| author_facet | G. Cristoforetti P. Londrillo P. K. Singh F. Baffigi G. D’Arrigo Amit D. Lad R. G. Milazzo A. Adak M. Shaikh D. Sarkar G. Chatterjee J. Jha M. Krishnamurthy G. R. Kumar L. A. Gizzi |
| author_sort | G. Cristoforetti |
| collection | DOAJ |
| description | Abstract Relativistic laser interaction with micro- and nano-scale surface structures enhances energy transfer to solid targets and yields matter in extreme conditions. We report on the comparative study of laser-target interaction mechanisms with wire-structures of different size, revealing a transition from a coherent particle heating to a stochastic plasma heating regime which occurs when migrating from micro-scale to nano-scale wires. Experiments and kinetic simulations show that large gaps between the wires favour the generation of high-energy electrons via laser acceleration into the channels while gaps smaller than the amplitude of electron quivering in the laser field lead to less energetic electrons and multi-keV plasma generation, in agreement with previously published experiments. Plasma filling of nano-sized gaps due to picosecond pedestal typical of ultrashort pulses strongly affects the interaction with this class of targets reducing the laser penetration depth to approximately one hundred nanometers. The two heating regimes appear potentially suitable for laser-driven ion/electron acceleration schemes and warm dense matter investigation respectively. |
| first_indexed | 2024-12-17T10:36:53Z |
| format | Article |
| id | doaj.art-93652ad276254bd2bf8a3ffd8b5596b1 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-17T10:36:53Z |
| publishDate | 2017-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-93652ad276254bd2bf8a3ffd8b5596b12022-12-21T21:52:22ZengNature PortfolioScientific Reports2045-23222017-05-01711810.1038/s41598-017-01677-5Transition from Coherent to Stochastic electron heating in ultrashort relativistic laser interaction with structured targetsG. Cristoforetti0P. Londrillo1P. K. Singh2F. Baffigi3G. D’Arrigo4Amit D. Lad5R. G. Milazzo6A. Adak7M. Shaikh8D. Sarkar9G. Chatterjee10J. Jha11M. Krishnamurthy12G. R. Kumar13L. A. Gizzi14Intense Laser Irradiation Laboratory at INO-CNRINAF–Osservatorio astronomico BolognaTata Institute of Fundamental ResearchIntense Laser Irradiation Laboratory at INO-CNRIstituto per la Microelettronica e Microsistemi, CNRTata Institute of Fundamental ResearchIstituto per la Microelettronica e Microsistemi, CNRTata Institute of Fundamental ResearchTata Institute of Fundamental ResearchTata Institute of Fundamental ResearchTata Institute of Fundamental ResearchTata Institute of Fundamental ResearchTata Institute of Fundamental ResearchTata Institute of Fundamental ResearchIntense Laser Irradiation Laboratory at INO-CNRAbstract Relativistic laser interaction with micro- and nano-scale surface structures enhances energy transfer to solid targets and yields matter in extreme conditions. We report on the comparative study of laser-target interaction mechanisms with wire-structures of different size, revealing a transition from a coherent particle heating to a stochastic plasma heating regime which occurs when migrating from micro-scale to nano-scale wires. Experiments and kinetic simulations show that large gaps between the wires favour the generation of high-energy electrons via laser acceleration into the channels while gaps smaller than the amplitude of electron quivering in the laser field lead to less energetic electrons and multi-keV plasma generation, in agreement with previously published experiments. Plasma filling of nano-sized gaps due to picosecond pedestal typical of ultrashort pulses strongly affects the interaction with this class of targets reducing the laser penetration depth to approximately one hundred nanometers. The two heating regimes appear potentially suitable for laser-driven ion/electron acceleration schemes and warm dense matter investigation respectively.https://doi.org/10.1038/s41598-017-01677-5 |
| spellingShingle | G. Cristoforetti P. Londrillo P. K. Singh F. Baffigi G. D’Arrigo Amit D. Lad R. G. Milazzo A. Adak M. Shaikh D. Sarkar G. Chatterjee J. Jha M. Krishnamurthy G. R. Kumar L. A. Gizzi Transition from Coherent to Stochastic electron heating in ultrashort relativistic laser interaction with structured targets Scientific Reports |
| title | Transition from Coherent to Stochastic electron heating in ultrashort relativistic laser interaction with structured targets |
| title_full | Transition from Coherent to Stochastic electron heating in ultrashort relativistic laser interaction with structured targets |
| title_fullStr | Transition from Coherent to Stochastic electron heating in ultrashort relativistic laser interaction with structured targets |
| title_full_unstemmed | Transition from Coherent to Stochastic electron heating in ultrashort relativistic laser interaction with structured targets |
| title_short | Transition from Coherent to Stochastic electron heating in ultrashort relativistic laser interaction with structured targets |
| title_sort | transition from coherent to stochastic electron heating in ultrashort relativistic laser interaction with structured targets |
| url | https://doi.org/10.1038/s41598-017-01677-5 |
| work_keys_str_mv | AT gcristoforetti transitionfromcoherenttostochasticelectronheatinginultrashortrelativisticlaserinteractionwithstructuredtargets AT plondrillo transitionfromcoherenttostochasticelectronheatinginultrashortrelativisticlaserinteractionwithstructuredtargets AT pksingh transitionfromcoherenttostochasticelectronheatinginultrashortrelativisticlaserinteractionwithstructuredtargets AT fbaffigi transitionfromcoherenttostochasticelectronheatinginultrashortrelativisticlaserinteractionwithstructuredtargets AT gdarrigo transitionfromcoherenttostochasticelectronheatinginultrashortrelativisticlaserinteractionwithstructuredtargets AT amitdlad transitionfromcoherenttostochasticelectronheatinginultrashortrelativisticlaserinteractionwithstructuredtargets AT rgmilazzo transitionfromcoherenttostochasticelectronheatinginultrashortrelativisticlaserinteractionwithstructuredtargets AT aadak transitionfromcoherenttostochasticelectronheatinginultrashortrelativisticlaserinteractionwithstructuredtargets AT mshaikh transitionfromcoherenttostochasticelectronheatinginultrashortrelativisticlaserinteractionwithstructuredtargets AT dsarkar transitionfromcoherenttostochasticelectronheatinginultrashortrelativisticlaserinteractionwithstructuredtargets AT gchatterjee transitionfromcoherenttostochasticelectronheatinginultrashortrelativisticlaserinteractionwithstructuredtargets AT jjha transitionfromcoherenttostochasticelectronheatinginultrashortrelativisticlaserinteractionwithstructuredtargets AT mkrishnamurthy transitionfromcoherenttostochasticelectronheatinginultrashortrelativisticlaserinteractionwithstructuredtargets AT grkumar transitionfromcoherenttostochasticelectronheatinginultrashortrelativisticlaserinteractionwithstructuredtargets AT lagizzi transitionfromcoherenttostochasticelectronheatinginultrashortrelativisticlaserinteractionwithstructuredtargets |