1. Foreword

   • Gwang-Min Sun

   Events 07 October 2021 Pages: 395 - 396

   

2. Recharge and spatial distribution of groundwater hydrochemistry in the Geum River basin, South Korea

   • Hanna Choi
   • Chung-Mo Lee
   • Yoon Yeol Yoon

   OriginalPaper 21 June 2021 Pages: 397 - 412

   

3. Tritium and stable isotope content variation in precipitation at Hongseung: West Korea Region

   • Yoon Yeol Yoon
   • Dong Chan Koh

   OriginalPaper 22 August 2021 Pages: 413 - 417

   

4. Magnetic and chemical characterization of black pottery from Hanseong Baekje archaeological site, South Korea

   • Dong Hyeok Moon
   • Myeong Seong Lee
   • Young Rang Uhm

   OriginalPaper 21 June 2021 Pages: 419 - 426

   

5. Mn doping on Mössbauer spectroscopy of maricite-NaFePO₄ as cathode material

   • Jae Yeon Seo
   • Hyunkyung Choi
   • Chul Sung Kim

   OriginalPaper 27 April 2021 Pages: 427 - 432

   

6. Magnetic, Mössbauer and hyperthermia properties of Co_1−xMn_xFe₂O₄ nanoparticles

   • Sanghee Jung
   • Jin Gyo Jung
   • Chul Sung Kim

   OriginalPaper 05 June 2021 Pages: 433 - 437

   

7. Magnetic properties of double perovskite Ca₂FeMoO₆ by neutron diffraction and Mössbauer spectral studies

   • Sung Baek Kim
   • Chul Sung Kim

   OriginalPaper 05 June 2021 Pages: 439 - 443

   

8. Mn–Zn ferrite nanoparticles for application in magnetic hyperthermia

   • Hyung Joon Kim
   • Sung Wook Hyun
   • Hyunkyung Choi

   OriginalPaper 21 June 2021 Pages: 445 - 454

   

9. Medical radioisotope ⁸⁹Zr production with RFT-30 cyclotron

   • Jun Young Lee
   • Min Goo Hur
   • Jeong Hoon Park

   OriginalPaper 26 July 2021 Pages: 455 - 460

   

10. Investigation on the magnetic and Mössbauer spectroscopy of ⁵⁷Fe doped LiMnPO₄

    • Hyunkyung Choi
    • Jae Yeon Seo
    • Chul Sung Kim

    OriginalPaper 21 June 2021 Pages: 461 - 467

    

11. Accuracy analysis on concentration determination of molecular iodine in gamma irradiated solutions

    • Minsik Kim
    • Jei-Won Yeon

    OriginalPaper 27 July 2021 Pages: 469 - 473

    

12. Concentration determination of I₂ and I⁻ formed by thermal and radiolytic decomposition of NaIO₃

    • Minsik Kim
    • Jihye Kim
    • Jei-Won Yeon

    OriginalPaper 21 June 2021 Pages: 475 - 480

    

13. Energy-dependent characteristics of prompt neutron anisotropic emission by ²⁴⁴Cm and ²⁴⁰Pu according to Monte Carlo simulations

    • Seonkwang Yoon
    • Hee Seo
    • Ho-Dong Kim

    OriginalPaper 25 July 2021 Pages: 481 - 491

    

14. Possibility of radioactivity measurement using an isothermal microcalorimeter

    • Young Jin Park
    • K. B. Lee
    • B. J. Kim

    OriginalPaper 04 September 2021 Pages: 493 - 499

    

15. Measurement of the neutron flux distribution in a research reactor by neutron activation analysis

    • Byung-Gun Park
    • Byung Jin Jun
    • Byungchul Lee

    OriginalPaper 22 June 2021 Pages: 501 - 512

    

16. Positron annihilation lifetime spectroscopy of advanced reduced-activation alloy (ARAA) in cold‐worked conditions

    • Young Su Jeong
    • Jaegi Lee
    • Yong Min Kim

    OriginalPaper 20 May 2021 Pages: 513 - 519

    

17. Development and operation of fiber-based radiation protection beam-loss monitor for PAL-XFEL

    • Nam-Suk Jung
    • Min-Ho Kim
    • Hee-Seock Lee

    OriginalPaper 21 June 2021 Pages: 521 - 528

    

18. Phase analysis of iron oxides forming the red pigment layer of the ancient earthenwares excavated from the southern Korean Peninsula

    • Min Hye Lee
    • Min Su Han
    • Chul Sung Kim

    OriginalPaper 25 July 2021 Pages: 529 - 538

    

19. Effect of gamma window setting on activity measurement of ¹³⁴Cs by 4πβ(LS)-γ coincidence method

    • Agung Agusbudiman
    • Kyoung Beom Lee
    • Dong Hye Heo

    OriginalPaper 21 June 2021 Pages: 539 - 545

    

20. A continuous radon monitoring system for integration into the climate change observation network

    • Kilyong Lee
    • Kyucheol Ha
    • Yongcheol Kim

    OriginalPaper 26 July 2021 Pages: 547 - 554

    

21. Comparative study of dual neutron/gamma scintillation detectors

    • Chaehun Lee
    • Seonkwang Yoon
    • Seong-kyu Ahn

    OriginalPaper 05 June 2021 Pages: 555 - 561

    

22. A study of ²²²Rn concentration of salty underground water and spring water in Jeju, Korea

    • Chung-Hun Han
    • Jeong Woo Hong
    • Hee-Jung Im

    OriginalPaper 28 August 2021 Pages: 563 - 569

    

23. Development of a mobile radon calibration system at KRISS

    • M. J. Han
    • S. H. Hwang
    • Y. G. Seon

    OriginalPaper 15 August 2021 Pages: 571 - 576