Yu-hsin Chen, Sanjay Varma, V. Kumarappan, H. Milchberg
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Asymmetric explosion of laser-irradiated hydrogen clusters
Under conditions of small hydrogen cluster size, where we expected angular-dependent time-of-flight (TOF) proton spectra consistent with isotropic coulomb explosions, we instead found strong explosion asymmetry with fast protons emitted preferentially in the direction of the laser polarization.