المؤلفون: Forrest, C. J., Deltuva, A., Schröder, W. U., Voinov, A. V., Knauer, J. P., Campbell, E. M., Collins, G. W., Glebov, V. Yu, Mannion, O. M., Mohamed, Z. L., Radha, P. B., Regan, S. P., Sangster, T. C., Stoeckl, C.

المصدر: Physics & Astronomy Open Access Publications

الوصف: © 2019 American Physical Society. Measurements are reported for the angle-averaged double-differential cross section (d2σ/σdEndωndEndωn)0<θ<7.4 for the breakup reaction H2(n,2n)H1, induced by 14-MeV neutrons generated using an inertial confinement fusion platform. A bright neutron source, created on the OMEGA Laser System [Boehly et al., Opt. Commun. 133, 495 (1997)10.1016/S0030-4018(96)00325-2] with a luminosity of L=1024s-1, was used to irradiate deuterated targets. The absolute yields and energy spectra from the breakup neutrons emitted in a forward-angle geometry (θ=0 to 7.4°) were detected with a sensitive, high-dynamic-range neutron time-of-flight spectrometer. The cross-section data, measured for neutron energy range from 0.5 to 10 MeV, is well reproduced by a theoretical calculation employing realistic nucleon-nucleon and three-nucleon forces.

وصف الملف: text/html

العلاقة: https://ohioopen.library.ohio.edu/physics-astronomy-oapub/19Test; https://doi.org/10.1103/PhysRevC.100.034001Test

الإتاحة: https://doi.org/10.1103/PhysRevC.100.034001Test
https://ohioopen.library.ohio.edu/physics-astronomy-oapub/19Test

المؤلفون: Gatu Johnson, M., Forrest, C. J., Sayre, D. B., Bacher, A., Bourgade, J. L., Brune, C. R., Caggiano, J. A., Casey, D. T., Frenje, J. A., Glebov, V. Yu, Hale, G. M., Hatarik, R., Herrmann, H. W., Janezic, R., Kim, Y. H., Knauer, J. P., Landoas, O., McNabb, D. P., Paris, M. W., Petrasso, R. D., Pino, J. E., Quaglioni, S., Rosse, B., Sanchez, J., Sangster, T. C., Sio, H., Shmayda, W., Stoeckl, C., Thompson, I., Zylstra, A. B.

المصدر: Physics & Astronomy Open Access Publications

الوصف: © 2018 American Physical Society. Full calculations of six-nucleon reactions with a three-body final state have been elusive and a long-standing issue. We present neutron spectra from the T(t,2n)α (TT) reaction measured in inertial confinement fusion experiments at the OMEGA laser facility at ion temperatures from 4 to 18 keV, corresponding to center-of-mass energies (Ec.m.) from 16 to 50 keV. A clear difference in the shape of the TT-neutron spectrum is observed between the two Ec.m., with the He5 ground state resonant peak at 8.6 MeV being significantly stronger at the higher than at the lower energy. The data provide the first conclusive evidence of a variant TT-neutron spectrum in this Ec.m. range. In contrast to earlier available data, this indicates a reaction mechanism that must involve resonances and/or higher angular momenta than L=0. This finding provides an important experimental constraint on theoretical efforts that explore this and complementary six-nucleon systems, such as the solar He3(He3,2p)α reaction.

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العلاقة: https://ohioopen.library.ohio.edu/physics-astronomy-oapub/89Test; https://doi.org/10.1103/PhysRevLett.121.042501Test

الإتاحة: https://doi.org/10.1103/PhysRevLett.121.042501Test
https://ohioopen.library.ohio.edu/physics-astronomy-oapub/89Test