TY - JOUR PB - American Physical Society ID - 10.1103/PhysRevFocus.10.6 TI - X Rays Stack Up JF - Physical Review Focus JA - Phys. Rev. Focus J1 - FOCUS VL - 10 IS - SP - 6 EP - PY - 2002/08/06/ UR - http://link.aps.org/doi/10.1103/PhysRevFocus.10.6 A1 - Minkel, JR ER -