On the determination of fluorine concentration profiles in magnesium alloy scales using the 19F(p, αγ)16O reaction

Jarjis, R.A.

doi:10.1016/0029-554x(78)90426-3

Cited by 25 publications

(2 citation statements)

References 9 publications

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“…The 19 F(p, αγ) 16 O reaction is used in many areas, from detector [1,2] and dosimeter [3,4] calibration to non destructive analysis of fluorine trace with PIGE [5,6]. It was noted by many authors [7,8,9,10,11,12] that the available data as reaction cross section, photon yields, resonance energies are insufficient and in some cases inconsistent.…”

Section: Introductionmentioning

confidence: 99%

19F (p, alpha gamma) 16O reaction: HPGe detector response function and gamma-ray relative yields

Tridapalli,

Pascholati,

Maidana

et al. 2007

Preprint

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The 6.1, 6.9 and 7.1 MeV photon yields in the reaction with protons in the 1.32 to 1.42 MeV energy range were determined from the comparison between experimental and simulated spectrum. The gamma-ray spectra were measured with a HPGe detector which was 72.5 mm in diameter and 60.5 mm in length. The reaction kinematics and the detector response function were simulated by different programs using the Monte Carlo method. The relative photon yields were obtained from the least-squares fit of the experimental gamma-ray spectra to the convolution of the detector response function with the photon energy distribution arising from the reaction kinematics.

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Section: Introductionmentioning

confidence: 99%

19F (p, alpha gamma) 16O reaction: HPGe detector response function and gamma-ray relative yields

Tridapalli,

Pascholati,

Maidana

et al. 2007

Preprint

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“…Na reação 19 F(p, αγ) 16 O, o núcleo composto 20 Ne fissiona emitindo uma partícula alfa, que pode possuir várias energias diferentes, deixando o 16 O a estados excitados, com 6,1, 6,9 ou 7,1 MeV, todos eles decaindo por um gama para o estado fundamental com 100 % de probabilidade, ou no estado com 6,05 MeV que decai por formação interna de pares e + e − [46,24,28] e obrigou ao uso do absorvedor de pósitrons já mencionado. Um espectro simples do HPGe foi obtido com outro detetor, posicionado a 90 o do feixe de prótons.…”

Section: Determinação Experimental Da Intensidade Do Terceiro Escapeunclassified

Detetores semicondutores de fótons na investigação das interações dos elétrons e fótons com a matéria

Maidana¹

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Photon detectors play a central role in the quantification of the interactions of photons and electrons with matter, therefore their characterization is necessary for a wide range of experiments and applications. Accurate determination of the efficiency and response of these detectors requires lengthy and costly experiments. The many attempts to reduce the effort spent in this process using simulations with Monte Carlo codes obtained efficiency and response of the detectors that did not reach the required accuracy when not guided by complementary experiments. This work reports the methodologies we developed to obtain the response and efficiency of detectors with good accuracy, combining experiment, simulation and the construction of analytic functions. Both the simulations and the analytical expressions took into account physical parameters, such as crystal dimensions, thicknesses of dead layers and other components of the detector, which were measured, modeled and/or calculated to match, within the experimental uncertainty, the measured efficiency of collimated photon beams. Some of the these studies led to find one detection secondary effect not previously reported in the literature. The characterized detectors were used in several measurements of cross sections of the bremsstrahlung and the ionization of atomic inner shells with the São Paulo Microtron electrons beams, which brought new contributions to the study of the interactions of photons and electrons with matter.

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Optimation of fluorine detection for biological and geological applications with a nuclear microprobe

Sommer

Mosbah²,

Métrich

et al. 1992

Journal of Radioanalytical and Nuclear Chemistry, Articles

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On the determination of fluorine concentration profiles in magnesium alloy scales using the 19F(p, αγ)16O reaction

Cited by 25 publications

References 9 publications

19F (p, alpha gamma) 16O reaction: HPGe detector response function and gamma-ray relative yields

19F (p, alpha gamma) 16O reaction: HPGe detector response function and gamma-ray relative yields

Detetores semicondutores de fótons na investigação das interações dos elétrons e fótons com a matéria

Optimation of fluorine detection for biological and geological applications with a nuclear microprobe

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