Klinik Lineer Hızlandırıcı Kullanılarak99Mo Radyoizotopunun Yarı-Ömür Tayini

Yıl 2016, Cilt: 11 Sayı: 2, 94 - 101, 02.12.2016

Mehmet Ertan Kürkçüoğlu Tuğba Göker

Öz

Radyoizotopların yarı-ömürlerinin
belirlenmesi, çekirdek yapılarının aydınlatılmasında önemli bir yere sahiptir. İlk defa bir
klinik lineer hızlandırıcı kullanılarak ¹⁰⁰Mo(γ,n)⁹⁹Mo fotonükleer reaksiyonunun gerçekleştirildiği
bu çalışmayla üretilen
⁹⁹Mo
radyoizotopunun yarı-ömrü belirlenmiştir. Yüksek saflıkta Germanyum dedektöre
sahip bir gama spektrometresi vasıtasıyla elde edilen ⁹⁹Mo
radyoizotopuna ait spektrum, MAESTRO, gf3 ve ROOT yazılımları kullanılarak
analiz edilmiştir. Elde edilen deneysel verilerle hesaplanan yarı-ömür
değerinin (64,44saat) daha önceki araştırma sonuçlarıyla ve uluslararası
Nükleer Veri Tabanı, NuDat’taki güncel yarı-ömür değeriyle (65,98 saat)
uyumlu olduğu bulunmuştur. Sonuç olarak, fotonükleer reaksiyon mekanizmasıyla
incelenebilecek orta ağırlıktaki radyoizotopların yeterli çıkış enerjisine
sahip bir c-linak kullanılarak çalışılabileceği gösterilmiştir.

Anahtar Kelimeler

c-linak, fotonükleer reaksiyon, 99Mo, yarı-ömür

Determination of the Half-Life of Molybdenum-99 Radioisotope by Using Clinical Linear Accelerator

Öz

Determination of the half-lives of the radioisotopes has an importance for
understanding about the nuclear structure. In this work, ¹⁰⁰Mo(γ,n)⁹⁹Mo
photonuclear reaction was studied for the first time by using a clinical linear
accelerator and the half-life of ⁹⁹Mo radioisotope was determined.
The spectrum of ⁹⁹Mo radioisotope was obtained by using a gamma
spectrometer with a high purity Germanium detector. Then, the spectrum was
analyzed by using MAESTRO, gf3 and ROOTsoftware. It was found that, the calculated
half-life value from the experimental data (64.44 h) agreed with the results of
the previous studies and the reported half-life value in Nuclear Data Database,
NuDat(65.98 h). As a conclusion, it has been shown that, the photonuclear
reaction mechanism for medium weight radioisotopes can be studied by using a
c-linac, which has suitable end point energy

Anahtar Kelimeler

c-linac, photonuclear reaction, 99Mo, half-life

Kaynakça

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