RT Journal Article T1 Attosecond transient absorption spectroscopy of helium above the N=2 ionization threshold A1 Petersson C.L.M., A1 Argenti L., A1 Martín, Fernando YR 2017 FD 2017 LK http://hdl.handle.net/20.500.12614/1302 UL http://hdl.handle.net/20.500.12614/1302 LA en DS Repositorio institucional de IMDEA Nanociencia RD 27 abr. 2026