Enhanced bulk-etch-rate of gamma irradiated PADC detector expressed by the radiation chemical yield of hydroxyl group

IF 1.8 3区物理与天体物理 Q2 NUCLEAR SCIENCE & TECHNOLOGY

Radiation Measurements Pub Date : 2026-02-01 Epub Date: 2025-12-03 DOI:10.1016/j.radmeas.2025.107584

Reo Yamada , Atsushi Kimoto , Hayato Seiichi , Shunto Sadamitsu , Daisuke Kohinata , Masato Kanasaki , Tamon Kusumoto , Hisashi Kitamura , Satoshi Kodaira , Sachiko Tojo , Tomoya Yamauchi

{"title":"Enhanced bulk-etch-rate of gamma irradiated PADC detector expressed by the radiation chemical yield of hydroxyl group","authors":"Reo Yamada , Atsushi Kimoto , Hayato Seiichi , Shunto Sadamitsu , Daisuke Kohinata , Masato Kanasaki , Tamon Kusumoto , Hisashi Kitamura , Satoshi Kodaira , Sachiko Tojo , Tomoya Yamauchi","doi":"10.1016/j.radmeas.2025.107584","DOIUrl":null,"url":null,"abstract":"<div><div>Enhanced bulk-etch-rate of PADC (polyallyl diglycol carbonate) detectors exposed to gamma rays has been found to be described well as an exponential function of the product of the radiation chemical yield of hydroxyl group (GOH) and the adsorbed dose (D) at different dose-rates between 0.41 and 8.14 Gy/s. The examined absorbed doses were ranging from 30 to 100 kGy, comparable with the local dose in proton tracks. By matching the bulk-etch-rates and the GOH values obtained under identical conditions on dose-rate, the following equation was derived for the relative bulk-etch-rate, Virra/Vb = exp(y･GOH･D), where, Virra and Vb denote the bulk-etch-rates after and before gamma irradiations, respectively, and y is an experimentally obtained constant in a unit of kg/mol, with a value of y = 5.98. In this relation, significant dose-rate dependence is explained as the dose-rate dependence of the GOH value. This means that the radiation damage that increases the bulk-etch-rate is the hydroxyl group itself, and y appears as a constant specific to PADC which relates the damage to bulk-etch-rate. Here, y is termed the “etching coefficient \".</div></div>","PeriodicalId":21055,"journal":{"name":"Radiation Measurements","volume":"191 ","pages":"Article 107584"},"PeriodicalIF":1.8000,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiation Measurements","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1350448725002136","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/12/3 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"NUCLEAR SCIENCE & TECHNOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

Enhanced bulk-etch-rate of PADC (polyallyl diglycol carbonate) detectors exposed to gamma rays has been found to be described well as an exponential function of the product of the radiation chemical yield of hydroxyl group (G_OH) and the adsorbed dose (D) at different dose-rates between 0.41 and 8.14 Gy/s. The examined absorbed doses were ranging from 30 to 100 kGy, comparable with the local dose in proton tracks. By matching the bulk-etch-rates and the G_OH values obtained under identical conditions on dose-rate, the following equation was derived for the relative bulk-etch-rate, V_irra/V_b = exp(y･G_OH･D), where, V_irra and V_b denote the bulk-etch-rates after and before gamma irradiations, respectively, and y is an experimentally obtained constant in a unit of kg/mol, with a value of y = 5.98. In this relation, significant dose-rate dependence is explained as the dose-rate dependence of the G_OH value. This means that the radiation damage that increases the bulk-etch-rate is the hydroxyl group itself, and y appears as a constant specific to PADC which relates the damage to bulk-etch-rate. Here, y is termed the “etching coefficient ".

查看原文本刊更多论文

用羟基的辐射化学产率表示γ辐照PADC探测器的增强体刻蚀率

在0.41和8.14 Gy/s之间的不同剂量率下，暴露于伽马射线下的PADC（聚烯丙基碳酸二甘醇）探测器的增强体腐蚀速率可以很好地描述为羟基（GOH）的辐射化学产率和吸附剂量(D)的乘积的指数函数。所检查的吸收剂量范围为30至100千戈瑞，与质子轨道的局部剂量相当。将相同剂量率条件下得到的体蚀率和GOH值进行匹配，得到体蚀率的相对方程Virra/Vb = exp（y弧弧弧弧弧度），其中，Virra和Vb分别表示辐照前后的体蚀率，y为实验得到的常数，单位为kg/mol， y = 5.98。在这个关系中，显著的剂量率依赖性被解释为GOH值的剂量率依赖性。这意味着增加体蚀速率的辐射损伤是羟基本身，y表现为PADC特有的常数，这与体蚀速率的损伤有关。这里，y被称为“蚀刻系数”。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Radiation Measurements 工程技术-核科学技术

CiteScore

4.10

自引率

20.00%

发文量

116

审稿时长

48 days

期刊介绍： The journal seeks to publish papers that present advances in the following areas: spontaneous and stimulated luminescence (including scintillating materials, thermoluminescence, and optically stimulated luminescence); electron spin resonance of natural and synthetic materials; the physics, design and performance of radiation measurements (including computational modelling such as electronic transport simulations); the novel basic aspects of radiation measurement in medical physics. Studies of energy-transfer phenomena, track physics and microdosimetry are also of interest to the journal. Applications relevant to the journal, particularly where they present novel detection techniques, novel analytical approaches or novel materials, include: personal dosimetry (including dosimetric quantities, active/electronic and passive monitoring techniques for photon, neutron and charged-particle exposures); environmental dosimetry (including methodological advances and predictive models related to radon, but generally excluding local survey results of radon where the main aim is to establish the radiation risk to populations); cosmic and high-energy radiation measurements (including dosimetry, space radiation effects, and single event upsets); dosimetry-based archaeological and Quaternary dating; dosimetry-based approaches to thermochronometry; accident and retrospective dosimetry (including activation detectors), and dosimetry and measurements related to medical applications.