Publications by authors named "F A Hartman"

We report the direct measurement of the 7Be solar neutrino signal rate performed with the Borexino detector at the Laboratori Nazionali del Gran Sasso. The interaction rate of the 0.862 MeV 7Be neutrinos is 49+/-3stat+/-4syst counts/(day.

View Article and Find Full Text PDF

Further improvement in the accuracy of any neutron lifetime experiment by means of ultracold neutrons (UCN) in material bottles is limited due to unavoidable systematic effects when the UCN are reflected from the walls. However, such effects can be excluded in principle if magnetic trapping of UCN is used. The storage of UCN in a small magnetic trap made of permanent magnets was demonstrated for the first time ever.

View Article and Find Full Text PDF

Nasal vaccination of mice with recombinant attenuated strains of Salmonella typhimurium is more efficient at inducing antibody responses than oral vaccination. However, mortality was observed when high doses [10(9) colony forming unit (CFU)], otherwise safe by the oral route, were administered. This observation was counterbalanced by the fact that nasal vaccination was still highly efficient with lower doses (10(6) CFU), which are inefficient by the oral route and this, without any incidents of mortality.

View Article and Find Full Text PDF