A paper on the Okamura explicit method (OEM) for burnup calculations implemented in NMB4.0 has been published in the Journal of Nuclear Science and Technology.

NMB code: Fuel cycle integrator

Published a paper on combustion calculation method in JNST

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ABSTRACT The Okamura explicit method (OEM) for depletion calculation was developed by modifying the matrix exponential method for dynamic nuclear fuel cycle simulation. The OEM suppressed the divergence of the calculation for short half-life nuclides, even for the longer time step length or the small number of time steps.

Published a paper on combustion calculation method in JNST

Cost-reduced depletion calculation including short half-life nuclides for nuclear fuel cycle simulation