Electron density

Mao, Xianglei, Wing-Tat Chan, Mark A Shannon, and Richard E Russo. "Plasma Shielding During Picosecond Laser Sampling of Solid Materials by Ablation in He Versus Ar Atmosphere." Journal of Applied Physics 74.8 (1993) 4915–4922.

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Mao, Samuel S, Xianglei Mao, Ralph Greif, and Richard E Russo. "Simulation of a picosecond laser ablation plasma." Applied Physics Letters 76.23 (2000) 3370–3372.

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Mao, Samuel S, Xianglei Mao, Ralph Greif, and Richard E Russo. "Dynamics of an air breakdown plasma on a solid surface during picosecond laser ablation." Applied Physics Letters 76 (2000) 31–33.

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Mao, Samuel S, Xianzhong Zeng, Xianglei Mao, and Richard E Russo. "Laser-induced breakdown spectroscopy: flat surface vs. cavity structures." J.Anal.Atom.Spectrom. 19 (2004) 495–498.

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Liu, Haichen, Xianglei Mao, Jong-Hyun Yoo, and Richard E Russo. "Nonlinear changes in plasma and crater properties during laser ablation of Si." Applied Physics Letters 75.9 (1999) 1216–1218.

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