Investigating the average kiloelectron-volt emission of partially observed events in nuclear physics through distance weighted mean based censored control chart

• Published in: PloS one Vol. 19; no. 11; p. e0308822
• Main Authors: Nisar, Shumaila, Raza, Syed Muhammad Muslim, Albalawi, Olayan, Alharthi, Aiedh Mrisi
• Format: Journal Article
• Language: English
• Published: San Francisco Public Library of Science 05-11-2024; Public Library of Science (PLoS)
• Subjects: Arrivals; Censored data (mathematics); Censorship; Computer and Information Sciences; Control charts; Dynamics of a particle; Electrons; Emission; Emission analysis; Emissions; Engineering and Technology; Expected values; Inventory control; Investigations; Life span; Lutetium; Lutetium isotopes; Matching; Mean; Medical research; Nuclear physics; Parameter estimation; Parameter identification; Particle decay; Physical Sciences; Physics; Radiation counters; Reliability engineering; Research and Analysis Methods; Sensors; Software quality; Statistical process control; Pakistan
• ISSN: 1932-6203; 1932-6203
• DOI: 10.1371/journal.pone.0308822

The average lifespan of particles, a crucial parameter in nuclear physics, is essential for identification purposes. Modern particle detectors excel at recognizing individual radioactive nuclei arrivals and their subsequent decay events. However, challenges arise when matching arrivals with departures, especially when departures are only partially observed. One inefficient approach involves conducting experiments with very low arrival rates to facilitate matching. The kiloelectron-volt E(keV) emission is obtained during this radio active process. This study focuses on the meticulous surveillance of the average keV emission from partially observed events within the domain of nuclear physics. To accomplish this, the methodology employs the statistical approach known as Distance Weighted Mean (DWM), integrated with the application of censored control charts. The utilization of censored control charts allows for the effective management of incomplete data, enabling researchers to make informed decisions despite potential limitations in observation. We propose a DWM based exponentially weighted moving average-cumulative sum (DWM-EC) control chart for monitoring kiloelectron-volt E(keV) data. The proposed charts is developed for Weibull lifetimes under type-I censoring. For the construction of an efficient control charting structure, we employed the conditional median (CM) methods. The goal is to find changes in the mean of Weibull lifetimes with censored data with known and estimated parameter conditions. The performance of the proposed DWM-EC chart is evaluated by the average run length (ARL). Besides a simulation study, a real-life data set on E(keV) related to the alpha decays of 177 Lutetium isotope is also discussed.