Combined effects of sample parameters on polymer charging due to electron irradiation: A contour simulation

Characteristics of charge and discharge of PMMA samples due to electron irradiation

“…Q disc is almost from free electrons. As reported in our previous work, [25] the quantity of trapped electrons increase almost linearly with the increase of H, while the increase of free electrons with H is more slowly. Therefore, the increase of the sample thickness H results in more increase in Q charge than in Q disc as shown in Fig.…”

“…The transport of charges accumulated in the sample is calculated by the finite-different time-domain (FDTD) method considering drift, diffusion, and trap of internal charges. [10,25] The transient characteristics of internal currents, charge quantity, and surface potential during both charge and discharge processes are then obtained, as well as effects of sample parameters of thickness and electron mobility on charging intensity.…”

Review of Radiation-Induced Effects in Polyimide

“…Charge build-up in electron-irradiated PI films has been extensively studied by Sessler et al [65,66] and Cao et al [67][68][69]. Excellent reviews of mechanisms accounting for the potential decay in electron-irradiated PI as well as various charge carriers transport models developed over the past several decades have been recently published by Molinie [70] and Tyutnev [71].…”

Investigation on environmental adaptation of polyimide film in space applications

“…These environmental factors induced many effects on spacecraft external materials, such as space radiation degradation effects, UV damage, Atomic oxygen erosion and so on. Due to the action of these environments, *yigangding@sina.com; phone 86-10-68113344; fax 86-10-68746751 the properties of thermal control thin films will be significantly degraded, such as an increase in solar absorptance [1][2][3][4][5] , a decrease in mechanical strength [6][7] or a change in surface resistivity. Therefore, Therefore, the adaptation of these materials to the space environment needs to be evaluated by ground simulation tests to determine whether these materials can be used in space.…”