TY - JOUR AU - P. Arpin AU - Tenio Popmintchev AU - N. Wagner AU - A. Lytle AU - O. Cohen AU - Henry Kapteyn AU - Margaret Murnane BT - Physical Review Letters DA - 2009-09 DO - 10.1103/PhysRevLett.103.143901 PY - 2009 T2 - Physical Review Letters TI - Enhanced High Harmonic Generation from Multiply Ionized Argon above 500~eV through Laser Pulse Self-Compression VL - 103 SN - 0031-9007 ER -