本书内容涵盖粒子物理基础、宇宙线的物理（加速、相互作用）和天文（起源、传播）问题及其探测方法。针对目前广为采用的大气簇射实验，本书侧重讨论了大气簇射中宇宙线各成分（包括强子、光子、μ子和中微子）的理论模型及数值模拟方法。书中的理论分析简明直观，密切结合实验，具有较强的针对性。读者通过本书可以对宇宙线这个学科有整体和适当深度的了解。本书适合作为物理学专业高年级本科生和研究生的入门教材。对粒子物理标准模型和天文学有基础性的了解有助于对本书的理解。本书亦适合工作在宇宙线领域的专家学者参考。

WhenIfirstdecidedtowriteabookonstringtheory,morethantenyearsago,mymemoriesofmystudentyearsweremuchmorevividthantheyaretoday.Still,Irememberthatoneofthegreatestpleasureswasfindingatextthatmadeadifficultsubjectaccessible,andIhopedtoprovidethesameforstringtheory.Thus,myfirstpurposewastogiveacoherentintroductiontostringtheory,basedonthePolyakovpathintegralandconformalfieldtheory.Nopreviousknowledgeofstringtheoryisassumed.Idoassumethatthereaderisfamiliarwiththecentralideasofgeneralrelativity,suchasmetricsandcurvature,andwiththeideasofquantumfieldtheorythroughnon-Abeliangaugesymmetry.Originallyafullcourseofquantumfieldtheorywasassumedasaprerequisite,butitbecameclearthatmanystudentswereeagertolearnstringtheoryassoonaspossible,andthatothershadtakencoursesonquantumfieldtheorythatdidnotemphasizethetoolsneededforstringtheory.Ihavethereforetriedtogiveaself-containedintroductiontothosetools.Asecondpurposewastoshowhowsomeofthesimplestfour-dimensionalstringtheoriesconnectwithpreviousideasforunifyingtheStandardModel,andtocol

This highly regarded text provides an up-to-date and comprehensive introduction to modem particle physics. Extensively rewritten and updated, this fourth edition includes all the recent developments in elementary particle physics, as well as its connections with cosmology and astrophysics. As in previous editions, the balance between experiment and theory is continually emphasized. The stress is on the phenomenological approach and basic theoretical concepts rather than rigorous mathematical detail. Short descriptions are given of some of the key experiments in the field, and how they have influenced our thinking. Although most of the material is presented in the context of the Standard Model of quarks and leptons, the shortcomings of this model and new physiceyond its compass (such as super symmetry, neutrino mass and oscillations, GUTs and superstrings) are also discussed. The text includes many problems and a detailed and annotated further reading list. This is a text suitable for final-year p

WhenIfirstdecidedtowriteabookonstringtheory，morethantenyearsago，mymemoriesofmystudentyearsweremuchmorevividthantheyaretoday.Still，Irememberthatoneofthegreatestpleasureswasfindingatextthatmadeadifficultsubjectaccessible，andIhopedtoprovidethesameforstringtheory. Thus，myfirstpurposewastogiveacoherentintroductiontostringtheory，basedonthePolyakovpathintegralandconformalfieldtheory.Nopreviousknowledgeofstringtheoryisassumed.Idoassumethatthereaderisfamiliarwiththecentralideasofgeneralrelativity，suchasmetricsandcurvature，andwiththeideasofquantumfieldtheorythroughnon-Abeliangaugesymmetry.Originallyafullcourseofquantumfieldtheorywasassumedasaprerequisite，butitbecameclearthatmanystudentswereeagertolearnstringtheoryassoonaspossible，andthatothershadtakencoursesonquantumfieldtheorythatdidnotemphasizethetoolsneededforstringtheory.Ihavethereforetriedtogiveaself-containedintroductiontothosetools. Asecondpurposewastoshowhowsomeofthesimplestfour-dimensionalstringtheoriesconnectwithprevio

本书着重阐述核辐射物理方面的基础理论知识、放射性测量技术、反应堆及加速器的物理基础和核技术及其应用。全书共分九章，前六章内容包括：原子结构及原子核的基本性质、放射性衰变的种类及其规律、核反应、射线与物质的相互作用、电离辐射量和辐射防护、核辐射探测器和测量方法，后三章内容包括：反应堆物理基础、加速器物理基础和核技术及其应用。在叙述上，力求做到层次清楚、简明易懂。本书亦可作为从事核动力和非动力核技术类专业的工程技术人员的培训，对与核技术有关的其他人员也有的参考价值。

《进化伊甸园》是一本值得所有化石爱好者收藏的杰出著作。这种艺术和知识的重大成就，值得所有学校的图书馆收藏。文字描写令人着迷，精美插图带来视觉盛宴，阅读《进化伊甸园》将给继续深入研究非洲野生动物奠定坚实的基础。除了对过去到现在的自然历史做了重要阐述外，本书还清晰地审视了人类的出现和演化。这是一本、有益和令人兴奋的著作。

This highly regarded text provides an up-to-date and comprehensive introduction to modem particle physics. Extensively rewritten and updated, this fourth edition includes all the recent developments in elementary particle physics, as well as its connections with cosmology and astrophysics. As in previous editions, the balance between experiment and theory is continually emphasized. The stress is on the phenomenological approach and basic theoretical concepts rather than rigorous mathematical detail. Short descriptions are given of some of the key experiments in the field, and how they have influenced our thinking. Although most of the material is presented in the context of the Standard Model of quarks and leptons, the shortcomings of this model and new physiceyond its compass (such as super symmetry, neutrino mass and oscillations, GUTs and superstrings) are also discussed. The text includes many problems and a detailed and annotated further reading list. This is a text suitable for final-year p