Neutron Monitors and Cosmogenic Isotopes as Cosmic Ray Energy-Integration Detectors: Effective Yield Functions, Effective Energy, and Its Dependence on the Local Interstellar Spectrum

Eleanna Asvestari; Agnieszka Gil; Gennady A. KovaltsovIlya G. Usoskin

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Neutron Monitors and Cosmogenic Isotopes as Cosmic Ray Energy-Integration Detectors: Effective Yield Functions, Effective Energy, and Its Dependence on the Local Interstellar Spectrum

机译：中子监测仪,宇宙发生的同位素,宇宙射线能量集成度探测器:有效的收益功能,有效的能源,它的依赖在本地星际频谱

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The method of assessment of galactic cosmic rays (GCR) variability over different timescales, using energy-integrating ground-based detectors such as a neutron monitor and cosmogenic isotopes ~(10)Be and ~(14)C stored in natural archives is revisited here. The effective yield functions for cosmogenic ~(14)C (globally mixed in the atmosphere) and ~(10)Be (realistically deposited in the polar region) are calculated and provided, in a tabulated form, in the supporting information. The effective energy of a detector is redefined so that the variability of the flux of GCR particles at this energy is equal to that of the detector’s count rate. The effective energy is found as 11–12 GeV/nucleon for the standard polar neutron monitor, and 6–7 GeV/nucleon and 5.5–6 GeV/nucleon for ~(14)C and ~(10)Be, respectively. New “calibration” relations between the force-field modulation potentials, based on different models of local interstellar spectra (LIS) are provided. While such relations are typically based on refitting the modeled cosmic ray spectra with a prescribed LIS model, the method introduced here straightforwardly accounts for the exact type of the detector used to assess the spectrum. The relations are given separately for ground-based neutron monitors and cosmogenic isotopes. This work allows for harmonization of different works related to variability of galactic cosmic ray flux in the vicinity of Earth, on long-term scale.

机译：银河宇宙射线的评估方法(GCR)变化在不同的时间尺度,使用energy-integrating陆基探测器如一个中子监测器和宇宙发生的同位素~(10)和~ (14)C存储在自然档案重新审视。宇宙发生的~ (14)C(全球混合大气)和~(10)(实际沉积在极地地区)计算和提供,以列表形式,支持信息。重新定义,通量的变化吗GCR粒子的能量等于探测器的计数率。能量是发现的11 - 12 GeV /核子标准的极地中子监测器,6 - 7GeV /核子和5.5 6 GeV / ~ (14) C和核子~(10),分别。力场调制之间的关系当地的潜力,根据不同的模型星际光谱(LIS)提供。这种关系通常是基于改装规定的宇宙射线光谱建模LIS)模型,这里介绍的方法直截了当地的具体类型探测器用于评估频谱。分别给出了地面的关系中子显示器和宇宙发生的同位素。允许不同工作的协调工作与银河宇宙射线的变化地球附近的通量,对长期规模。

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《Journal of Geophysical Research, A. Space Physics: JGR》 |2017年第10期|9790-9802|共13页
作者
Eleanna Asvestari; Agnieszka Gil; Gennady A. KovaltsovIlya G. Usoskin;
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作者单位

Institute of Mathematics and Physics, Siedlce University, Siedlce, Poland;

Space Climate Research Unit, University of Oulu, Oulu, Finland;

Ioffe Physical-Technical Institute, St. Petersburg, Russia;

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isotopes; DEPENDENCE; Energy sourcescosmic raysneutronspolar regionsMONITORInterstellarSpectraGalactic cosmic rayNEUTRON MONITORSproxy records (geophysical);

机译：sourcescosmic同位素;依赖;能量raysneutronspolarregionsMONITORInterstellarSpectraGalactic宇宙rayNEUTRON MONITORSproxy记录(物探);

Neutron Monitors and Cosmogenic Isotopes as Cosmic Ray Energy-Integration Detectors: Effective Yield Functions, Effective Energy, and Its Dependence on the Local Interstellar Spectrum

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