From nuclear materials accountability to detection of special nuclear material, SNM, the need for better modeling of fission has grown over the past decades. Current radiation transport codes compute average quantities with great accuracy and performance, but performance and averaging come at the price of limited interaction-by-interaction modeling. For fission applications, these codes often l...

Neutron-induced reaction cross sections of unstable nuclei are essential for understanding the synthesis heavy elements in stars and applications nuclear technology. However, their measurement is very complicated due to radioactivity targets involved. We propose circumvent this problem by using surrogate method inverse kinematics, where nucleus formed neutron- induced interest produced a involv...

Fission fragment mass and angular distributions were measured from the 64 Ni+ 197 Au reaction at 418 MeV and 383 MeV incident energy. A detailed data analysis was performed, using the one-body dissipation theory implemented in the code HICOL. The effect of the window and the wall friction on the experimental observables was investigated. Friction stronger than one-body was also considered and i...

Reaction measurements on fission products are being planned at both Argonne National Lab and the Facility for Rare Isotope Beams. These indirect experiments produce specific short-lived nuclei via beta decay, subsequent neutron gamma emission studied. Some initial found a surprising overabundance of emission, which theory has yet to explain. To remedy this, we developing an integrated nuclear d...

Dynamin is a dimeric GTPase that assembles into a helix around the neck of endocytic buds. Upon GTP hydrolysis, dynamin breaks these necks, a reaction called membrane fission. Fission requires dynamin to first constrict the membrane. It is unclear, however, how dynamin helix constriction works. Here we undertake a direct high-speed atomic force microscopy imaging analysis to visualize the const...

Secondary reactions induced by relativistic beams in inverse kinematics in a thick target are relevant in several fields of experimental physics and technology, like secondary radioactive beams, production of exotic nuclei close to the proton drip line, and cross-section measurements for applications of spallation reactions for energy production and incineration of nuclear wastes. A general mat...

The experiments presented here investigate the competing photodissociation pathways for allyl chloride upon excitation of the nominally pp*~CvC! transition at 193 nm. The measured photofragment velocity distributions evidence C–Cl bond fission and HCl elimination. The recoil kinetic energy distribution for the HCl products is bimodal, indicating two primary processes for HCl elimination. The ex...

We have deduced the cross section for 237 U(n, f) over an equivalent neutron energy range from 0 to 20 MeV using the surrogate ratio method. A 55 MeV 4 He beam from the 88 inch cyclotron at Lawrence Berkeley National Laboratory was used to induce fission in the following reactions: 238 U(α, α f) and 236 U(α, α f). The 238 U reaction was a surrogate for 237 U(n, f), and the 236 U reaction was us...