Statistical calculations of nuclear fragment distributions

Ambiguities in statistical calculations of nuclear fragmentation

The concept of freeze out volume used in many statistical approaches for disassembly of hot nuclei leads to ambiguities. The fragmentation pattern and the momentum distribution (temperature) of the emanated fragments are determined by the phase space at the freeze-out volume where the interaction among the fragments is supposedly frozen out. However, to get coherence with the experimental momen...

Statistical evolution of fragment isospin in nuclear multifragmentation

The knowledge of the isotope composition of fragments produced in nuclear multifragmentation can help in resolving important problems: Do the fragments keep the memory of the initial dynamical stage or are they produced statistically? How does the isospin influence the disintegration of finite nuclei and what is the difference to the case of nuclear matter? What is the isospin dependence of the...

Comparison of Calculations of Fragment Production

Statistical power calculations: comment.

Power analysis is often used to interpret nonsignificant results (NS). It is a 2-step process: Step 1: Calculate the power of the NS test. Step 2: Use the calculated power to decide whether the NS occurred because (a) the phenomenon was not present or (b) the phenomenon was present but the test had insufficient power to detect it. If power is high, one accepts: (a) the phenomenon was not presen...

Statistical distributions of pyrosequencing

Pyrosequencing is emerging as one of the important next-generation sequencing technologies. We derive the statistical distributions of this technique in terms of nucleotide probabilities of the target sequences. We give exact distributions both for fixed number of flow cycles and for fixed sequence length. Explicit formulas are derived for the mean and variance of these distributions. In both c...