Suplemento de la Revista Mexicana de Física最新文献_第5页

Numerical modeling of radiation-induced reactions: Fricke dosimeter at 298 K, 198 K, and 77 K 辐射诱发反应的数值模拟:弗里克剂量计在298 K, 198 K和77 K

Suplemento de la Revista Mexicana de Física Pub Date : 2023-03-08 DOI: 10.31349/suplrevmexfis.4.011001

Alejandro Paredes Arriaga, A. L. Rivera, D. Frías, S. Ramos, A. Negrón Mendoza

{"title":"Numerical modeling of radiation-induced reactions: Fricke dosimeter at 298 K, 198 K, and 77 K","authors":"Alejandro Paredes Arriaga, A. L. Rivera, D. Frías, S. Ramos, A. Negrón Mendoza","doi":"10.31349/suplrevmexfis.4.011001","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.4.011001","url":null,"abstract":"The Fricke dosimeter is a widely used gamma radiation dosimetry system. The system is based on the detection of Fe2+ to Fe3+ oxidation in an aqueous solution of ferrous sulfate in sulfuric acid, exposed to ionizing radiation in the presence of oxygen. The system is formed by a series of highly dependent chemical reactions. We developed a numerical model of coupled differential equations based on the mass balance; each equation incorporates information about the formation and breakdown of each molecule, as well as a term that represents an external source of radiation. The numerical model can reproduce the behavior of the experimental data at room temperature. We proposed a correction factor to simulate the behavior of the dosimeter at temperatures of 198 K and 77 K, respectively, when the system is in a thermal bath of dry ice or liquid nitrogen. This model could support a variety of experimental challenges for radiation at low temperatures in different fields of industry and could have relevance for astrobiology problems by offering the possibility of simulating reactions in comets and other exoplanetary bodies.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128808851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

GEANT4 dose estimations of solar protons: Al and PMMA-Bi2O3 shielding for space exploration 太阳质子的GEANT4剂量估计:用于空间探索的Al和PMMA-Bi2O3屏蔽

Suplemento de la Revista Mexicana de Física Pub Date : 2023-03-08 DOI: 10.31349/suplrevmexfis.4.011003

J. Mireles, J. A. López, L. Sajo-Bohus, M. Castro-colin

{"title":"GEANT4 dose estimations of solar protons: Al and PMMA-Bi2O3 shielding for space exploration","authors":"J. Mireles, J. A. López, L. Sajo-Bohus, M. Castro-colin","doi":"10.31349/suplrevmexfis.4.011003","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.4.011003","url":null,"abstract":"Adverse effects of long-term exposure to galactic cosmic radiation (GCR) pose a clear obstacle to future space exploration programs. In addition to GCR we have solar particle radiation. We simulated the latter using a scaled fluence profile of solar protons taken from a literature study that comprises about three solar cycles. The model is a three-layer stack that includes shielding material and muscular tissue. Our simulation strategy uses protons as precursor radiation of neutrons. Subsequently, the shield is adjusted for thickness, dictated by an average depth at which neutrons are created through various processes during the simulation. Neutrons are then energy-binned and a corresponding neutron flux is simulated. Particles generated during the second phase of the simulation, i.e. by neutrons, are then counted toward absorbed dose within the muscular tissue layer. Clearly, the dynamics of the process is not captured by the simulation, nevertheless an overview of neutron yield can be estimated and the absorbed dose. The objective is to provide some insight about the effect of the new composite shield, PMMA-Bi2O3, that has an intrinsic capability for gamma dose reduction, compared to a more traditional aluminum shield.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130790161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A tale of two jets 两架飞机的故事

Suplemento de la Revista Mexicana de Física Pub Date : 2022-12-10 DOI: 10.31349/suplrevmexfis.3.040902

C. Nattrass, Antonio Antonio Da Silva, P. Steffanic, C. Hughes

引用次数: 0

Heavy Flavor Physics at the EIC with the ECCE detector 重味物理在EIC与ECCE探测器

Suplemento de la Revista Mexicana de Física Pub Date : 2022-12-10 DOI: 10.31349/suplrevmexfis.3.040916

Xuan Li

引用次数: 0

Synthesis of light nuclei in hadronic collisions 强子碰撞中轻核的合成

Suplemento de la Revista Mexicana de Física Pub Date : 2022-12-10 DOI: 10.31349/suplrevmexfis.3.040918

H. Appelshäuser

{"title":"Synthesis of light nuclei in hadronic collisions","authors":"H. Appelshäuser","doi":"10.31349/suplrevmexfis.3.040918","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.040918","url":null,"abstract":"Light-nuclei production yields in heavy-ion collisions are well described in the framework of Statistical Hadronization Models (SHM) but a thorough understanding of the underlying dynamics is still missing. In a complementary approach, synthesis of light nuclei can be modeled in terms of final-state coalescence of nucleons. While yielding an equally good description in central heavy-ion collisions, coalescence predictions are substantially different to those from SHM in small collision systems, in particular for the loosely bound hypertriton. This should allow a firm distinction of the two production scenarios in small collision systems. Comprehensive data on light-nuclei and hypertriton production in pp and p–Pb collisions from the ALICE Collaboration are presented in this contribution. Complementary to the measurement of production yields, the dynamics of nuclear cluster formation can be inferred from the measurement of final-state correlations of nucleons and light nuclei. Preliminary p-d correlation results from high-multiplicity pp collisions at √ 11 s = 13 TeV are compared to calculations based on experimental scattering parameters and discussed in the context of nuclear cluster formation.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116037774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

J/ψ and ψ(2S) production in small systems with PHENIX 使用PHENIX在小型系统中生产J/ψ和ψ(2S)

Suplemento de la Revista Mexicana de Física Pub Date : 2022-12-10 DOI: 10.31349/suplrevmexfis.3.040913

A. Frawley

引用次数: 0

PHENIX Spin Physics Overview 凤凰自旋物理概述

Suplemento de la Revista Mexicana de Física Pub Date : 2022-12-10 DOI: 10.31349/suplrevmexfis.3.040908

D. Fitzgerald

引用次数: 0

Demographic study of major conferences in heavy ion physics 重离子物理主要会议的人口统计学研究

Suplemento de la Revista Mexicana de Física Pub Date : 2022-12-10 DOI: 10.31349/suplrevmexfis.3.040922

C. Nattrass, C. Andres, R. Belmont, Jennifer Blue, Geraldine Cochran, M. Connors, J. Frantz, D. Mroczek, J. Noronha-Hostler, Stacyann Nelson, R. Reed, S. Salur, N. Sharma, Patrick Patrick Steffanic, D. Thomas, Z. Ye

引用次数: 0

Perfect QCD – a new Universal approach to soft QCD 完美QCD -软QCD的一种新的通用方法

Suplemento de la Revista Mexicana de Física Pub Date : 2022-12-10 DOI: 10.31349/SuplRevMexFis.3.040901

P. Christiansen

{"title":"Perfect QCD – a new Universal approach to soft QCD","authors":"P. Christiansen","doi":"10.31349/SuplRevMexFis.3.040901","DOIUrl":"https://doi.org/10.31349/SuplRevMexFis.3.040901","url":null,"abstract":"The ideas presented in this proceeding aims to be a first step towards a description of hadronic collisions where all soft processes are fundamentally strongly coupled and the same Universal strongly coupled physics drives both initial and final-state interactions. As it is not currently possible to derive such a picture from first principles, instead, an attempt to generalize the perfect liquid observation to a “perfect QCD” guiding principle is presented, focusing on implications for particle production in small systems. The first steps towards a microscopic model is taken by arguing that “perfect QCD” suggests that the screening in the initial state is so large that multi-parton interactions are of little or no importance. Instead, a target and projectile remnant is coherently excited and particle production is mainly driven by radiation in a qualitative similar manner as e+ e ̅ rightarrow qq̅. Finally, some of the possible implications of this “excited remnant model” are presented. It is argued that the time ordering of soft and hard physics can explain the absence of jet quenching in small systems and that the coherence scale of the projectile and target provides insights into what small systems will exhibit flow.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114079039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring and exploiting various regimes within the jet shower 探索和利用喷射淋浴的各种机制

Suplemento de la Revista Mexicana de Física Pub Date : 2022-12-10 DOI: 10.31349/suplrevmexfis.3.040903

R. Kunnawalkam Elayavalli

{"title":"Exploring and exploiting various regimes within the jet shower","authors":"R. Kunnawalkam Elayavalli","doi":"10.31349/suplrevmexfis.3.040903","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.040903","url":null,"abstract":"The last few years have seen community-wide excitement in the study of jet substructure derived from the inner workings of clustering algorithms. Such efforts have resulted in the design of new observables which are related to partonic processes from final state hadrons. Since jets are multi-scale objects, they necessarily encode information about both the perturbative (pQCD) parton shower and non-perturbative (npQCD) physics including hadronization. Recent high precision measurements of jet substructure in proton-proton (pp) collisions have pushed the theoretical community into extending their predictions to higher orders resulting in the observation of large theoretical uncertainties from the non-perturbative regime of the calculations. We emphasize the importance of understanding a jet shower from a multidimensional point of view and highlight a recent measurement focused on distinguishing the pQCD vs. npQCD regimes within a jet shower. We introduce and discuss the utility of the formation time evaluated at varying stages of the jet shower in pp collisions. Finally, we present a monte-carlo study of the formation time of charged particles within the jet to gain a handle on hadronization mechanisms including stringbreaking, and outline a path forward for such observables in heavy ion collisions.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121149142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0