Multineutron photodisintegration of the 197Au nucleus behind the giant dipole resonance

Ermakov, A. N.; Ishkhanov, B. S.; Капитонов, И.М.; Htun, Kyaw Kyaw; Макаренко, И. В.; Orlin, V. N.; Shvedunov, V.I.

doi:10.1134/s1063778808030010

Cited by 7 publications

(5 citation statements)

References 7 publications

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“…It is well consistent with the present measured value of the 197 Au(γ ,2n) 195 Au reaction, differ by about 5.5% . In column 5 of Table 2 we also give two data sets of integrated cross sections for the 197 Au(γ ,xn) 197-x Au reactions measured by Makarenkov et al [30] and Ermakov et al [31]. Although these reference data cannot be used to directly compare with current results, but they can show trends.…”

Section: Resultsmentioning

confidence: 99%

“…In this work, the nuclear reaction 197 Au(γ, n) 196 Au was used as monitor. Fortunately, the integrated cross section data sets found in literature of the 197 Au(γ, n) 196 Au reaction [26][27][28][29][30][31] covered the energy range from the threshold to 67.7 MeV. Plaisir et al [26] provided the detail excitation function in energy range below 20 MeV.…”

Section: Iii3 Determination Of Integrated Cross Sectionmentioning

confidence: 99%

“…Belov et al [29] provided one data in the energy range from threshold to 25 MeV. Makarenkov et al [30] and Ermakov et al [31] each one provided one data in the energy range from threshold to 67.7 MeV. Thus, the integrated cross-section of the 197 Au(γ, n) 196 Au reaction can be obtained by fitting the literature data.…”

Section: Iii3 Determination Of Integrated Cross Sectionmentioning

confidence: 99%

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Integrated Cross Sections of the Photo-Neutron Reactions Induced on \(^{197}\)Au with 60 \(\text{MeV}\) Bremsstrahlung

Luân

Xuân³

et al. 2020

Comm. in Phys.

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Abstract. Seven photo-neutron reactions 197Au(γ,xn)197-xAu (with x=1-7) produced by the bremsstrahlung end-point energy of 60 MeV were identified. In this work, we focus on the measurement of integrated sections. Experiments were carried out based on the activation method in combination with off-line gamma-ray spectrometric technique. The integrated cross sections of the investigated reactions were determined relative to that of the monitoring reaction 197Au(γ,n)196Au. To validate the experimental results, theoretical predictions were also made using the computer code TALYS 1.9. The current integrated cross-sections of the 197Au(γ,xn)197-xAu reactions with 60 MeV bremsstrahlung end point energy are measured for the first time.

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Section: Resultsmentioning

confidence: 99%

Section: Iii3 Determination Of Integrated Cross Sectionmentioning

confidence: 99%

Section: Iii3 Determination Of Integrated Cross Sectionmentioning

confidence: 99%

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Integrated Cross Sections of the Photo-Neutron Reactions Induced on \(^{197}\)Au with 60 \(\text{MeV}\) Bremsstrahlung

Luân

Xuân³

et al. 2020

Comm. in Phys.

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“…In pair production, a photon interacts with the electromagnetic field surrounding the atomic nucleus and is converted into an electron and a positron, with the total photon energy less the rest energy of the two particles (0.511 MeV each) being shared between them. It should be noted that for high photon energies (>≈8 MeV), photodisintegration can also occur, in which the incident photon causes the atom to emit one or more neutrons, potentially resulting in a radioactive isotope of gold [31].…”

Section: Ionizing Photon Interaction With Gold Nanoparticlesmentioning

confidence: 99%

Evolution of Gold Nanoparticles in Radiation Environments

Briggs¹,

Hattar²

2019

Gold Nanoparticles - Reaching New Heights

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Gold nanoparticles are being explored for several applications in radiation environments, including uses in cancer radiotherapy treatments and advanced satellite or detector applications. In these applications, nanoparticle interactions with energetic neutrons, photons, and charged particles can cause structural damage ranging from single atom displacement events to bulk morphological changes. Due to the diminutive length scales and prodigious surface-to-volume ratios of gold nanoparticles, radiation damage effects are typically dominated by sputtering and surface interactions and can vary drastically from bulk behavior and classical models. Here, we report on contemporary experimental and computational modeling efforts that have contributed to the current understanding of how ionizing radiation environments affect the structure and properties of gold nanoparticles. The future potential for elucidating the active mechanisms in gold nanoparticles exposed to ionizing radiation and the subsequent ability to predictively model the radiation stability and ion beam modification parameters will be discussed.

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“…In pair production, a photon interacts with the electromagnetic field surrounding the atomic nucleus and transforms into an electron and a positron, with the total photon energy less than the remaining energy of the two particles (0.511 MeV each) being shared between them. It should be noted that for high photon energies (>~8 MeV), photodisintegration can also occur, in which the incident photon causes the atom to emit one or more neutrons, potentially resulting in a radioactive isotope of gold [36]. Additionally, photon irradiation experiments involving gold nanoparticles are prevalent, as X-ray therapies for cancer treatment are fairly common practice [37][38][39].…”

Section: Literature Surveymentioning

confidence: 99%