A simple hydride model for cerium ejecta particles

Technical Report · Mon Apr 20 04:00:00 EDT 2020

DOI:https://doi.org/10.2172/1615655· OSTI ID:1615655

Regele, Jonathan David ^[1]; Harrison, Alan Kent ^[1]; Schwarzkopf, John Dennis ^[1]; Buttler, William Tillman ^[1]

---

1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Cerium ejecta particles form after a shock wave impacts a cerium plate with a known roughness or prescribed surface perturbation. When these particles are ejected into hydrogen or deuterium gas the material reacts exothermically and raises the temperature of the particle relative to the gas. A simple model is developed, assuming that the particle remains intact and spherical, to capture the heat and mass transfer that occurs during this process. Model performance is evaluated by comparing with cerium ejecta experiments where the particles are ejected into deuterium gas at initial pressures of 4 and 8 atm. Overall, the model is able to capture the approximately 400 K increase in particle temperature above the surrounding gas temperature.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: 89233218CNA000001
• OSTI ID: 1615655
• Report Number(s): LA-UR--20-23014
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE