کمربندهای تشعشعی ون آلن: چالش مهم مأموریت‌های زیست-فضا

نوع مقاله : علمی- ترویجی

نویسندگان

1 استادیار پژوهشگاه هوافضا

2 دانشگاه پلی تکنیک مادرید، اسپانیا.

چکیده

مأموریت‌های فضایی سرنشین‌دار بخش اعظمی از سفرهای آیندة فضایی را به خود اختصاص می‌دهد. تشعشعات فضایی کمربندهای ون آلن یکی از چالش‌های مهم مأموریت‌های فضایی با رویکرد زیست-فضا است. فضاپیماها تحت نفوذ تشعشعات پرانرژی موجود در فضا قرار دارند که تأثیرات زیادی بر وسایل الکتریکی و محموله‌های آنها، به خصوص محموله‌های زیستی دارد. این امر نیاز به حفاظت تشعشعی یا کاهش اثر آن را دارد.به عنوان مثال، زمانی که گیاهان تحت تأثیر تنش تشعشعی قرار می‌گیرند، این تشعشعات تأثیر مخربی بر رشد آنها به علت آسیب دی ان ای می‌گذارد و منجر به کاهش رشد و تغییرات ژنتیکی آنها می‌شود. در این مقاله، به بررسی اثرات تشعشعی کمربندهای ون آلن بر موجودات زنده در سفرهای فضایی پرداخته می‌شود.

کلیدواژه‌ها


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