Earticle

초록

영어

Background: The Kaligandaki River from Kushma to Galeshwor is considered a high natural background radiation area, requiring baseline assessment of naturally occurring radionuclides for radiation protection. Materials and Methods: A portable gamma-ray spectrometer (PGIS-2) equipped with a NaI(Tl) scintillator detector was employed. Radiological hazard parameters, including radium equivalent activity, absorbed gamma dose rates in air, annual effective dose rate, external hazard index, and internal hazard index, were determined. Results and Discussion: The mean activities of radionuclides 238U, 232Th, and 40K, were found to exceed global average values. Radium equivalent activity ranged from 141.48 Bq·kg−1 to 313.24 Bq·kg−1, with a mean value 204.91 Bq·kg−1 for the Kushma–Galeshwor region. The annual effective dose rates were 0.12 mSv· yr−1 and 0.47 mSv· yr−1 for outdoors and indoors, respectively. Conclusion: Although these values exceed global averages, they remain within established safety limits. The findings highlight the importance of continuous monitoring to ensure environmental and public safety in regions with naturally occurring radioactive materials. Therefore, from a radiation protection perspective, the region is considered safe.

목차

ABSTRACT
Introduction
Materials and Methods
1. Geological Description of the Study Area
2. Instrumentation
3. Estimation of Radiological Parameters
Results and Discussion
Conclusion
Article Information
References

키워드

저자

• Bal Vikram Khatri [ Central Department of Physics, Tribhuvan University, Kirtipur, Nepal ] Corresponding Author
• Devendra Raj Upadhyay [ Central Department of Physics, Tribhuvan University, Kirtipur, Nepal ]
• Himali Kalakhety [ Department of Physics and Geosciences, Texas A&M University, Kingsville, TX, USA ]
• Om Prakash Niraula [ Central Department of Physics, Tribhuvan University, Kirtipur, Nepal ]
• Raju Khanal [ Central Department of Physics, Tribhuvan University, Kirtipur, Nepal ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  방사선방어학회지 [Journal of Radiation Protection and Research]

• 간기

  계간

• pISSN

  2508-1888

• 수록기간

  1976~2026

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 559 DDC 629