Modified Bubble Core Fields and Bubble Shape in Laser Driven Plasma |
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Authors: | WU Hai-Cheng XIE Bai-Song |
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Institution: | 1. Key Laboratory of Beam Technology and Materials Modification of the Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China;
2. Center for Applied Physics and Technology, Peking University, Beijing 100084, China |
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Abstract: | Bubble core fields as well bubble shape modification due to the nondepleted electrons inside the bubble is investigated theoretically. It is found that the slope of transverse fields are reduced significantly, however, the slope of longitudinal electric field, which plays a key role on electrons acceleration in bubble, changes little. Moreover a modified longitudinal compressed bubble shape leads to a shorter dephasing distance which makes the electrons acceleration energy reduced to some extent. As a comparison we perform particle-in-cell simulations whose results are consistent with that of our theoretical consideration. |
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Keywords: | laser-plasma interaction laser-driven plasma bubble particle-in-cell |
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