研究目的
Investigating a novel recovery method of soft X-ray spectrum unfolding based on compressive sensing to optimize the design of the laser and target in inertial confinement fusion experiments.
研究成果
The proposed method enables accurate recovery of the soft X-ray spectrum from limited detection channels, achieving comparable accuracy with fewer channels than traditional methods. This approach can save space for other detectors in inertial confinement fusion experiments.
研究不足
The method's performance is dependent on the number of detection channels and the accuracy of the measurement matrix. The experimental setup may not account for all possible variations in real-world applications.
1：Experimental Design and Method Selection:
The spectrum recovery is formulated as a problem of accurate signal recovery from very few measurements using compressive sensing. The proper basis atoms are selected adaptively over a Legendre orthogonal basis dictionary with a large size and Lasso regression in the sense of (cid:96)1 norm.
2：Sample Selection and Data Sources:
The soft X-ray spectrum from inertial confinement fusion experiments is used, with measurements obtained from limited detection channels.
3：List of Experimental Equipment and Materials:
Soft X-ray spectrometer, collimator, filter, mirror, XRD, cable, attenuator, and oscillograph.
4：Experimental Procedures and Operational Workflow:
The spectrum signal is converted into voltage signals, which are then used to recover the original spectrum using the proposed method.
5：Data Analysis Methods:
The recovery error is evaluated using Root Mean Squared Error (RMSE) and Mean Absolute Error (MAE).
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