Experimental determination of the band oscillator strengths of the CO A(1)II(11 <= v'<= 23)-X-1 Sigma(+)(v"=0) made at the LURE-SuperACO synchrotron facility.

The band-integrated absorption oscillator strengths of the CO A(1)II(11 les s than or equal to v'less than or equal to 23)-X(1)Sigma(+)(v"=0) transitio n have been measured using monochromatized synchrotron radiation from the L URE-SuperACO facility as background source. The absorption spectra were ana lyzed using the simulation-fitting technique described in an earlier public ation (Jolly et al. 1997). Up to v'=20, the results are in good agreement w ith very recent ab initio calculations (Spielfiedel et al. 1999) and VUV la ser measurements( Stark et al. 1998). For v'=23 which is measured here for the first time, and for v'=21 the measured oscillator strengths are found t o be significantly larger than the Calculated ones. Combining experimental and calculated results, a set of recommended oscillator strengths is propos ed.