For pioneering and innovative contributions to cosmochemistry, meteoritics, and planetary science, and also for outstanding contributions to the Earth and planetary science community
A list of five major papers
Nagahara, H. (1981): Evidence for the secondary origin of chondrules. Nature, 292, 135-136.
Nagahara, H. and Ozawa, K. (1996): Evaporation of forsterite in H2 gas. Geochim. Cosmochim. Acta, 60, 1445-1459.
Nagahara, H. and Ozawa, K (2000): Isotopic fractionation as a probe of heating processes in the solar nebula. Chem. Geol., 169, 45-68.
Young, E. D., Galy, A., and Nagahara, H. (2002): Different mass-dependent isotope fractionation laws in nature and their geochemical and cosmochemical significance. Geochim. Cosmochim. Acta, 66, 1095-1114.
Kita, N. T., Nagahara, H., Togashi, S. and Morishita, Y (2000): Narrow time interval for chondrule formation in the solar nebula: evidence from 26Al in Semarkona ferromagnesian chondrules. Geochim. Cosmochim. Acta, 64, 3913-3922.