scholarly journals Cases of sexual diseases with alpha-emitting nanoparticulates : Parkinson’s, Primary Biliary Cholangitis (prostate and clitoris) – and opening the breast implant debate

2021 ◽  
pp. 49
Author(s):  
Keyword(s):  
Breast Implant ◽  
Alpha Decay ◽  
Primary Biliary Cholangitis ◽  
Internal Contamination ◽  
Alpha Emitters ◽  
Cultural Choices ◽  
Sexual Repression

These diseases can be called sexual diseases thanks to retro-analysis of the global process of development and degenerescence and combination of the author’s earlier works with research of other authors that demonstrate in new ways the argument. Cultures that encourage sexual repression produce diseases mechanically and exogeneous factors of internal contamination with alpha emitters demultiplicate the effects spilling from these cultural choices. It is possible that researchers investigating Parkinson’s have already years ago understood the link with alpha decay and “flagged” it but because they thought that Parkinson patients indeed due to their full responsivity in depriving their own prostate whereas homosexuality shows how stimulating it creates well-known powerful orgasms, had to suffer, and went not beyond the allegory of alpha emitting nanoparticulates in their articles (which is why this is called “flagging” – “signaling”).

Systematic of alpha decay half-lives: role of quantization condition

2021 ◽  
pp. 1-9
Author(s):  
M. Hosseini-Tabatabaei ◽  
S.A. Alavi ◽  
V. Dehghani
Keyword(s):  
Alpha Decay ◽  
Tunneling Probability ◽  
Quantization Condition ◽  
Nuclear Potential ◽  
Mean Square ◽  
Mean Square Deviation ◽  
Wkb Method ◽  
Saxon Potential ◽  
Alpha Emitters

Using the semiclassical WKB method and considering the WKB quantization condition, the alpha decay half-lives of 420 alpha emitters were calculated with eight forms of the proximity and Woods–Saxon type potentials. The effect of quantization condition on the nuclear potential, effective potential, assault frequency, tunneling probability, alpha decay half-life, and root mean square deviation between theory and the experiment were investigated. Significant differences between calculated half-lives with and without inclusion of the quantization condition were observed specially for proximity potentials. By including the quantization, the Woods–Saxon potential was found as the best potential for even–even, even–odd, odd–even, odd–odd, and all alpha emitters. The quantization condition normalized the nuclear potentials. Therefore, by considering this condition, the thirteen forms of the prox77 potential with different sets of the surface energy and surface asymmetry constants gave the same results. This result was justified with two sets of parameters.

Correlation between alpha preformation probability, decay half-life and barrier assault frequency

2017 ◽  
Vol 26 (05) ◽  
pp. 1750026 ◽  
Author(s):  
M. Ismail ◽  
A. Y. Ellithi ◽  
A. El-Depsy ◽  
O. A. Mohamedien
Keyword(s):  
Barrier Height ◽  
Alpha Particle ◽  
Half Life ◽  
Alpha Decay ◽  
Strong Correlations ◽  
Alpha Emitters ◽  
Barrier Penetration ◽  
Penetration Probability ◽  
Good Agreement

Calculation of alpha particle preformation probabilities for some alpha emitters is considered in the framework of a recent proposed barrier penetration formula, by two different approximations. The behavior of alpha particle preformation probability with the variation of neutron and proton numbers of parent nuclei for isotopes, in the range [Formula: see text], and isotones, in the range [Formula: see text], is investigated. The same correlations are then studied for the alpha decay half-life, the barrier assault frequency, barrier height and barrier penetration probability. Strong correlations are found and in a good agreement with experimental expectations.

scholarly journals EFFECT OF NUCLEAR DEFORMATION ON THE ALPHA-DECAY HALF-LIFE OF EVEN-EVEN ALPHA EMITTERS

2000 ◽  
Vol 09 (03) ◽  
pp. 205-219 ◽  
Author(s):  
A. DIMARCO ◽  
S. B. DUARTE ◽  
O. A. P. TAVARES ◽  
M. GONÇALVES ◽  
F. GARCÍA ◽  
...  
Keyword(s):  
Coulomb Potential ◽  
Half Life ◽  
Free Parameter ◽  
Daughter Nucleus ◽  
Alpha Decay ◽  
Quantum Mechanical ◽  
Nuclear Deformation ◽  
Alpha Emitters ◽  
Nuclear Quadrupole ◽  
Multipolar Expansion

Alpha-decay half-life of even-even emitters has been calculated in terms of tunnelling through a quantum mechanical potential barrier. A multipolar expansion of Coulomb potential has been developed taking into account the nuclear quadrupole, hexadecapole, and hexacontatetrapole deformations. We show that using a free-parameter model the calculated half-lives do not vary significantly with higher order multipolarities of the daughter nucleus deformation.

scholarly journals Nanoradiopharmaceuticals Based on Alpha Emitters: Recent Developments for Medical Applications

Pharmaceutics ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1123
Author(s):  
Maydelid Trujillo-Nolasco ◽  
Enrique Morales-Avila ◽  
Pedro Cruz-Nova ◽  
Kattesh V. Katti ◽  
Blanca Ocampo-García
Keyword(s):  
Alpha Decay ◽  
Inorganic Nanoparticles ◽  
Particle Therapy ◽  
Recoil Energy ◽  
Alpha Emitters ◽  
New Approaches ◽  
Recent Developments ◽  
High Linear Energy Transfer

The application of nanotechnology in nuclear medicine offers attractive therapeutic opportunities for the treatment of various diseases, including cancer. Indeed, nanoparticles-conjugated targeted alpha-particle therapy (TAT) would be ideal for localized cell killing due to high linear energy transfer and short ranges of alpha emitters. New approaches in radiolabeling are necessary because chemical radiolabeling techniques are rendered sub-optimal due to the presence of recoil energy generated by alpha decay, which causes chemical bonds to break. This review attempts to cover, in a concise fashion, various aspects of physics, radiobiology, and production of alpha emitters, as well as highlight the main problems they present, with possible new approaches to mitigate those problems. Special emphasis is placed on the strategies proposed for managing recoil energy. We will also provide an account of the recent studies in vitro and in vivo preclinical investigations of α-particle therapy delivered by various nanosystems from different materials, including inorganic nanoparticles, liposomes, and polymersomes, and some carbon-based systems are also summarized.

Estimation of the long term helium production in high burn-up spent fuel due to alpha decay and consequences for the canister

2014 ◽  
Vol 1665 ◽  
pp. 297-302
Author(s):  
Alba Valls ◽  
Mireia Grivé ◽  
Olga Riba ◽  
Maita Morales ◽  
Kastriot Spahiu
Keyword(s):  
Spent Nuclear Fuel ◽  
Swelling Pressure ◽  
Alpha Decay ◽  
Nuclear Fuels ◽  
Spent Fuel ◽  
Fuel Rods ◽  
Α Decay ◽  
Alpha Emitters ◽  
Maximal Pressure

ABSTRACTIn the KBS-3 repository concept and safety analysis, the copper container with a cast iron insert plays a central role in assuring isolation of the waste from the surrounding during long periods of time. All processes that affect its stability are thoroughly analysed, including potential detrimental processes inside the canister. For this reason, an estimation of the helium produced during the long term decay of alpha emitters in the spent fuel is necessary to evaluate if the pressures generated inside can have consequences for the canister.The spent nuclear fuel to be disposed of in Sweden is mainly LWR fuel. The maximum burn-up expected is 60 MWd/kg U for BWR and PWR. A small quantity of BWR MOX is expected to be stored with a maximum burn-up of 50 MWd/kg U.This work has focused on carrying out calculations of the amounts of He generated during more than 1 million years in Swedish spent nuclear fuels with a benchmarking exercise by using both codes AMBER and Origen-ARP. The performance and agreement of the codes in the He generation from α-decay have been checked and validated against data reported in literature [1].In the calculation of the maximal pressure inside the canister, the quantity of helium used to pre-pressurise the fuel rods has been accounted for. The pressure inside the canister due to He generation is at all times much lower than the hydrostatic pressure and/or the bentonite swelling pressure outside the canister.

scholarly journals The shuriken effect of fertile alpha emitters : a physical process behind findings of chemical toxicity of depleted uranium

2021 ◽  
pp. 15
Author(s):  
Keyword(s):  
Physical Process ◽  
Alpha Decay ◽  
Depleted Uranium ◽  
Physical Effect ◽  
In Situ Observation ◽  
Chemical Toxicity ◽  
Alpha Emitters ◽  
Chemical Effects

This letter is a contribution on the study of nanoparticles for in situ observation and general understanding of nanoparticle physics. The positing that “chemical” effects from alpha emitters found by researchers actually come from the particular physical effect demonstrated with firmness here is not always possible (as alpha decay also interferes) but a case where this is definitive is given.

Role of constant value of surface diffuseness in alpha decay half-lives of superheavy nuclei

2018 ◽  
Vol 33 (14) ◽  
pp. 1850080 ◽  
Author(s):  
V. Dehghani ◽  
S. A. Alavi ◽  
Kh. Benam
Keyword(s):  
Alpha Decay ◽  
Tunneling Probability ◽  
Nuclear Potential ◽  
Superheavy Nuclei ◽  
Wkb Method ◽  
Alpha Emitters ◽  
Surface Diffuseness ◽  
Diffuseness Parameter ◽  
Good Agreement

By using WKB method and considering deformed Woods–Saxon nuclear potential, deformed Coulomb potential, and centrifugal potential, the alpha decay half-lives of 68 superheavy alpha emitters have been calculated. The effect of the constant value of surface diffuseness parameter in the range of 0.1 [Formula: see text]a [Formula: see text] 0.9 (fm) on the potential barrier, tunneling probability, assault frequency, and alpha decay half-lives has been investigated. Significant differences were observed for alpha decay half-lives and decay quantities in this range of surface diffuseness. Good agreement between calculated half-lives with fitted surface diffuseness parameter a = 0.54 (fm) and experiment was observed.

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