Level structure of Mg21: Nuclear and astrophysical implications
Resonant elastic scattering of a radioactive $^{20}\mathrm{Na}$ beam incident upon protons in a polyethylene target has been used to probe the level structure of $^{21}\mathrm{Mg}$ above the proton decay threshold. Three states have been observed, and their properties deduced through analysis based on the R-matrix formalism. The results improve and extend previous studies of this nucleus. An estimate of the $^{20}\mathrm{Na}$(p,\ensuremath{\gamma})$^{21}\mathrm{Mg}$ reaction rate, including these new data, suggests this reaction will not play a significant role in explosive hydrogen burning in astrophysical sites such as novae and x-ray bursts.
Nuclear Astrophysics at TRIUMF
Abstract The Nuclear Astrophysics program at TRIUMF, particular the one centered around the DRAGON and TUDA facilities, as well as some additional experiments will be discussed. In particular, measurements of the 12 C( α , γ ) 16 O, the 26 Al(p, γ ) 27 Si and the 40 Ca( α , γ ) 44 Ti reactions at DRAGON will be described. For the TUDA facility a measurement of 10 B( α ,p) 13 C as a test for the 18 Ne( α ,p) 21 Na measurement is presented. The development of the new cylindrical, large solid angle gas detector TACTIC will be described. In addition, new measurements refuting a temperature dependence of radioactive decay times in metals will be presented as well as GEANT4 simulations regarding the β -delayed α -spectrum of 16 N will be given.
France in the Middle Ages 987-1460 : from Hugh Capet to Joan of Arc
Translatora s Note. Foreword. List of Illustrations. List of Genealogical Tables. Part I: The Inheritance: . 1. The Empire. 2. The Frankish People. 3. The Principalities. 4. Disturbances. Part II: Lordship:. 5. The Village. 6. The Castle. 7. The Church. 8. King and Lord. Part III: Origins of State and Nation:. 9. The Great Age of Progress. 10. Louis VII. 11. Philip Augustus. 12. The South. 13. The Thirteenth Century. 14. The Fourteenth Century. 15. The Maid of Orleans. Epilogue. Chronology. Bibliography. Index.