Direct Approach To Explosive Hydrogen Burning Process With Crib

Experimental efforts to nuclear astrophysical problems by the direct method are discussed including our new data for the explosive hydrogen burning process. We first present our new extensive, low-energy in-flight RI beam separator CRIB, which has been installed primarily for nuclear astrophysics. This is delivering RI beams of 10(6) pps for some ions and will be increased by one or two orders of magnitudes in near future. Two experiments performed with CRIB are discussed. One of the most crucial stellar reactions O-14(alpha,p)F-17 for the onset of the high-temperature rp-process was directly investigated and the transitions through the states at around 6.2 MeV in Ne-18 were first observed, confirming the importance of the process predicted before. The reaction leading to the first excited state in F-17 was also found to have a considerable contribution. A proton resonance search experiment of Mg-23 + p was also discussed, which is a part of our series of resonance search studies relevant to the early stage of the rp-process.