Predicting the surface age of chondritic S-type asteroids using the space weathering features in reflectance spectra: Small data machine learning

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Table 1

Summary of studies on laser irradiation and ion irradiation of materials.

Study	Material	Method	E_L (mJ)	E_i (keV)	F (ions cm⁻²)
Moroz et al. (1996)	OL, PX, OL-PX mix, L5	Laser	1.2
Yamada et al. (1999)	OL, PX	Laser	15, 30
Hiroi & Sasaki (2001)*	OL	Laser	15, 30
Kurahashi et al. (2002)	OL	Laser	30
Sasaki et al. (2003)	OL, PX	Laser	30
Brunetto et al. (2006)	OL, PX	Laser	43-105
Hiroi et al. (2012)*	OL-PX-mix	Laser	15
Kaluna et al. (2017)	OL	Laser	30
Yang et al. (2016)	OL	Laser	25, 50
Fazio et al. (2018)	OL	Laser	2.3
Wang et al. (2022)	OL, PX	Laser	50
Hasegawa et al. (2019)*	L6, LL4, LL6, L4, L3-6, H5, H6	Laser	15
Han et al. (2021)	PX, OL-PX mix	Laser	30
Chrbolková et al. (2021)	OL, PX	H⁺, Laser	1-375	5	10¹⁴−10¹⁸
Zhang et al. (2022)	H6, LL6/6	Laser	35
Palamakumbure et al. (2023)	L/LL4, H4	H⁺		1	2 × 10¹⁷−1 × 10¹⁸

Notes. * = Obtained from RELAB, E_L = Laser energy per pulse, E_i = Ion energy, F = Fluence, OL = Olivine, PX = Pyroxene, OL-PX mix = Mixture of olivine and pyroxene, L = Low iron Chondrite, H = High iron Chondrites, LL = Low total iron and low metal chondrites.

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