Determination of attenuation parameters and energy absorption build-up factor of amine group materials

We have computed radiological parameters of some C- H- N- O based amine group bio material in the energy range 122–1330keV with the gamma ray count by narrow beam geometry. The NaI(Tl) detector with 8K multichannel analyser was used having resolution 6.8% at 663keV. The energy absorption buildup factor (EABF) was determined by using Geometric Progression (G-P) fitting method up to penetration depth of 40mfp at energy 0.015–15MeV. The NIST XCOM data were compared with the experimental value and we observed (3–5%) difference. The comparative study of effective atomic number and effective electron density in the energy range 122–1330keV using Gaussian fit for accuracy were performed. The amino acid has the highest EABF value at 0.1MeV and the variation in EABF with penetration depth up to 1–40 mean free path (mfp). The calculated radiological data of biological material are applicable in medical physics and dosimetry.